Social sites are bullshit, unless you got an army of friends, no one is going to notice you.
CPC? Even with insanely low 0.2 per click, and 5% ridiculously high conversion, that’s only 2500 users. Only 5% of them will be loyal users, so we are down to 125. What about next month?
Hoping to get noticed by techcrunch / mashable is stupid.
SEO is also no good, it will take months to get ranked. And If the idea is unique it won’t help (did anyone search for "how do i send 140 char messages" before twitter, or even after?). Trying to rank for more general keywords like ‘find friends online’ is retarded, would take years.
Solution one: Get lucky, get noticed by the players. Solution two: Get funding, switch 10K/life to 30K/month. Solution three: ????.