It's only desperate if you keep bugging someone who clearly has no interest in you. Other than that, it's fair game.
We have become a social media-age. Dating online is just the modern version of an old concept.
Nope I think some people might need a little confidence boost, and others are okay chatting up someone they meet at a bar,
Nope. Not at all :) Online dating has become a regular thing (It's like normal dating, just online. ;) ) You just have to keep it save though, and be sure the person you're 'dating' is not a 44-year-old-sex-offender-living-with-his-parents, then you're good to go!