what is the best niches of social networking out there and which ones u think are not saturated and has demand?
actually we don't have a niche yet, just a good domain - bigspot.net we need 1 million members niche, if u have one, suggest.. i don't think 40+ has 1 million members... maybe soldiers niche? students? the site has: audio/video/images/blogs/wiki/forums/polls/etc
not the other way around I guess; Myspace => was (i think is, but ok) total crap, still is back, twitter => was always down and crap, hyves.net => is down 3-4 hours a day => still growing like hell. if you have good marketing, quality doesn't matter at all
I havent seen social network categorized by age. I mean they do ask for DOB and age but I am thinking as in as in only this age group can access this and the contents (about retirements, investment, college etc...) So basically you will have to mod the social network script with permissions and you will have contents/forums/stuff for seperate age groups AND 1 general that everyone may have in common. it may involve huge laod of burden in getting it up, but it may attract alot.
I just recently featured a new social network that is only for extreme sport people. You can see the article on my website (see sig).
thats the million dollar question! I would recommend just going through industries searching for them until you find one thats underpopulated!