Well, I guess some people resort to it because they feel lonely.I guess it's as good way of finding a partner as any other way.Some people go to a library to study while some people go there to meet their other half.Some people here,like myself, simply look for a language exchange partner and friendship but some may other motives which make them register on such sites (dating,spamming,viral marketing,hacking etc.) This is just how it is on the net.This is why it is wise to be cautious about revealing your sensitive personal data.

they are looking for it because they want to be happy... thats all i can say..

I guess you just have to be patient and wait until the right person contacts you. ;-)

guys who do this either SHALLOW or PLAYFUL persons soo dont ever give attention to such pple they just look forward to wastein' time and amusin' thmselves ..... sometimes it happens that we're talking to a certain person for a long time then feel comfortable ((even in this situation)) it wasn't true or real feelings cause we cant know someone from internet we just imagine the guy of our dreams in that net partener and the same guys do.. and i think if we met that person it would be a big shock soooooooo i advise them not to waste thier time and feelings with wrong ones.

Since you've got already all the answers, I just want to add that you're not alone!!! Hehe, they send these "personal" invitations for "more deep" relationships to everyone...