I was thinking why some of the people on my friends list never say hello and then i realised i do the same, so to complain would be hypocritical.
Anyway there will always be attention seekers on sotes like these, and no way to get around that fact. Ok some sites ask you to post a salute to prove ourself, but that forces people who want to hide behind a mask, for various reasons, to reveal who they are. This would drive some very interesting people into the shadows again and we would be the losers.
So next time you look at a profile and assume that they are fake, ask yourself what reasons they are hiding for. Get to know them and then one day they may reveal themselves.