At some point in our lives - perhaps bleary-eyed while watching an infomercial at 3 a.m. - we've all probably shouted out, "I thought of that years ago!" Most of us, however, never actually acted on our instinct to, say, create a blanket with sleeves or an exercise weight you shake.

But three old college pals can make the claim - and back it up - that they dreamed up the idea for a college-based social networking site, and for a short time ran it, years before coeds began "friending" and "poking"...