its actually very interesting about what @colinsidoti said about twitter, its stupid but yet it kind of solves a problem, although twitter is very celebrity orianted!! thats why i don't like it!!!
I am not a Twittery type of person either, I would rather have people tweet about me and what I am doing than do it myself. Although a lot of people do find it fun and fascinating.
If what you have in mind for your startup solves a problem for people, that seems like something that may be on the right track to make some good money.