I have been online dating for over a year now and I cannot believe how many people use a webcam photo for their dating profile, I find this especially true for women.
They look like crap and never show the person in the best light. Almost everyone has a digital camera these days and if not you could always use your phone's camera which are usually much better quality and most now even have a flash.
If you want someone to reply to your profile, the first thing you do is make sure you have a high quality photo for your profile. It just makes common sense people, first impressions do count!