Few things you might want to try.
1) Add the site to
Google,
msn live search, yahoo etc... At the moment if people search for "pc fuel" nothing comes up.. unless people know the exact url they are never going to find it.
2) Get some adverts / links out there, post on lots of other forums/message boards and get links to your site for people to see. The more links there are out there, the more likely it is someone will click it and stumble across here.
3) Add something unique, make something interesting about this site that other websites don't do, if your the only site with (something) or the only place people can download (something), then they will come to/register on this site for it.
Anyway just a few things i can think of, i'll probably add someone when i think of them.
A site wont get popular just by friends alone
Jon