I have something to add here for let you understand why it like that...
As I know ,many or most of those "russian girls" from small town in Russia,who fishing for money on dating sites-it's American or other men from diffirent countries!
It's some kind of business for them. And of course all those pic of girls will be very beautiful,because it's a some russian singer,actress,etc from (I seen it myself and recognise a few singers

. Some of the men who had this business already in jail(as I know they from USA). You can try to search for articles online about this.My husband seen that article about month ago,but I don't remember name of the site .
Many women in Russia like to marry american men,because we read everywhere,plus TV-that american men -is more family men and his family is most important to him. They don't cheat on wifes as it do russian ,italian ,franch or chinese men. Russian married men think that have a lover-it's normal.And who is rich -they supposed to have one!

Also they like to drink much.
I think you don't need to be affraid to have contacts with russian girls.Only never send money to them without previosly meet her and see how she live ,what kind person she is,etc.
(My husband came to visit me first,then he sent me money to go to another city for interwiev in american embassy and money for air tickets. From my place to USA those tickets cost 2 000$ and he knew that I can't affort it. ..