Lulu, a dating app designed to help women rate and share information about the men they date, has become part of online dating giant Badoo.

Lulu has had an interesting history. Founded in 2011 by Alexandra Chong, the app was originally created to help women have a safer online dating experience by encouraging them to communicate with other women over the app about the men they dated. Users were given the ability to rate their dates according to looks, humor, ambition, and even sexual prowess. They could also add pre-made hashtags for more detailed examples describing a man, like #OneWomanMan, #WillActSilly or #EpicLaugh.

You know how to use Tinder. You know how to use OkCupid. The same goes for Match.com and eHarmony. But do you know what goes on behind the scenes?

Christian Rudder – co-founder and former CEO of OkCupid, Harvard alumnus and author of Dataclysm – knows the dating industry inside and out. He recently spoke at Northeastern University about finding love in the modern age, and what it takes to be a company that facilitates it. These days it's not Cupid in charge of your heart – it's math, data, algorithms, and analysis.

How does it all work? Rudder spilled his secrets to Northeastern's President Joseph Aoun. On why he was motivated to make a better dating site, Rudder said he wanted to create well-balanced relationships. The key, he believed, was versatility. A system like eHarmony's felt too rigid, while OkCupid's matching allowed for greater flexibility.

Could one word really be hurting your online dating game? Could one word make it better?

Dating app Hinge looked at 5,000 users who exchanged contact information within 24 hours of matching to determine which opening lines are most likely to get dates (and which will get you ghosted).

Using a text analysis model, they identified common phrases and words in the conversations they examined. So which words were winners and which words were losers?

The biggest flop was the word 'sorry.' Hinge users who included 'sorry' in an initial communication were a whopping 56% less likely to get a person's number. Next time you feel tempted to apologize for not responding sooner, take the “sorry not sorry” approach (just don't actually write it). You were busy and that's a good thing. Besides, not explaining yourself creates a teeny bit of intriguing mystery your date may be eager to solve.

Hinge's research also found that being vague and “wishy-washy” is a turn-off for potential dates. People who suggested dates in ambiguous timeframes like “this weekend” and “next week” were 40% less likely to score someone's digits. The more specific you can be, the better. After all, you matched with them so you must be interested in them – make it clear by arranging concrete plans, or answering with a simple yes or no.

At the other end of the spectrum, laughter proved to be irresistable. Hinge found that conversations that used words associated with laughing – like 'haha' and the ever-present 'lol' – had a 17% higher chance of ending in an exchange of phone numbers. It's not hard to believe when you consider how many people say a sense of humor is one of the most important traits in a partner. And what would flirting be without a little witty banter?

Unsurprisingly, compliments also had a positive effect on conversations, but one type of compliment in particular stood out. When a Hinge user told another user that they have a cool name, it increased the likelihood of getting their digits by 12.5%. Destiny's Child had it right: say my name, say my name (especially if it's to talk about how awesome it is).

Of course, no amount of dating advice or studies can guarantee a a phone number (much less a date), but they can help you avoid some basic mistakes. For more information on the dating app which brought us this study you can read our review of Hinge.

Most of us have heard the term “six degrees of separation,” made famous first by the sociology study in the 1960’s, and later in the nineties through references to Kevin Bacon’s prolific acting career. The theory was born: we are all only “six degrees of separation” from him, or anyone else, on the planet.

Now, Facebook is concluding we could be even more connected to each other – by as little as 3.5 degrees.

What this means is that that when you are connected to all the people you know, and they are connected to all the people they know, and so on, you are inevitably linked – through your own network of friends, and friends of friends - to such notable figures as the President of the United States, a Kardashian, football star Tom Brady, or Senator Marco Rubio. That’s right, we’re all only six people removed from everyone else on the planet.

Recently, the numbers were studied again – this time by Facebook, using its own platform. The company found that despite the fact that over the last twenty years or so the population of the planet has increased – we are now closer to each other than ever before. We are all, on average, only three and a half degrees of separation from anyone else on the planet, thanks in large part to the role social media plays in our lives.

Think of it this way: If you have 100 friends, and each of your friends has 100 friends, that's already 10,000 friends of friends to whom you are connected.

In the United States, people are even more closely connected to each other – by an average of 3.46 degrees. At least among those who have Facebook accounts, which totals about 1.59 billion according to Facebook. And Pew Research Center’s report last year shows that about 72% of US adults are active online.

More people are signing up for the Facebook platform every day, which means the numbers are dynamic and makes the connections even closer. For instance, in 2011, researchers at Cornell, the Università degli Studi di Milano, and Facebook analyzed the average across 721 million people using the site then, and found that the degree of connection between people was 3.74. Now, with twice as many people using Facebook, we've grown more interconnected, thus shortening the distance between any two people in the world.

One problem with Facebook’s figures is that in real life, the majority of people only consider a portion of their Facebook friends as “real” friends. The typical Facebook user has 155 friends, but only describes 50 of them as friends in real life, according to a 2014 study from the Pew Research Center. Thirty-five percent of people have Facebook friends they've never met in person.

What does this mean? For one, social media and the Internet have drawn us all closer to each other – in a way. Maybe we aren’t any closer to each other in terms of real life interactions, but in a virtual world, we find connection.

Found if this social network makes a good dating service substitute, read our Facebook review.

Update 2019-05-19: Please note that these coupons have expired and there are currently no coupon codes available for Christian Mingle on their website or dating app.

What Christian Mingle is offering now is up to 25% off a 3 and 6 month subscription (as of the last time we checked which is January 16, 2018).

Depending on the subscription term length, Christian Mingle subscriptions are as low as $24.99 a month. This sale could expiry at any time so act soon if you are thinking of joining. When you upgrade your free Christian Mingle account the sale prices will be presented to you.

Christian Mingle does also offer further discounts on special occasions. When these discounts are happening we will update this post with more information on how to apply them to your membership. To find out more about this dating service and why it is popular with Christian singles you can read our Christian Mingle review. User reviews of Christian Mingle are also accessible from this page.

Are You Interested (AYI), the first online dating service to utilize Facebook connections in its matchmaking process by pairing friends of friends in the same social media circles, has announced that it has rebranded its AYI app and website.

The new service is called FirstMet, which parent company Snap Interactive says “reflects the company’s vision for making it easier for single adults to meet new people in a friendly, low-pressure environment.” At first glance, the design of FirstMet is similar, and the app still uses Facebook as a connection tool. However, the experience is specifically designed for mobile users, as opposed to AYI’s online service.

AYI launched in 2007, and has since gained about 30 million users worldwide. While the app attracted a nice user base, rivals like Tinder and the traditional dating sites like Match still cornered the market for attracting new and more active users.