I'm on Facebook...now I feel all weird...

I'm not sure why I just did what I did, but I added myself on Facebook. I thought it was enough that I had a blog, plus a myspace, but I had some friends that were on Facebook so I figured, what the heck. So I signed up. There was a feature in which it takes my googlemail address book and finds which ones have a facebook. And unbelievably there were 41 people who had facebook profiles just from my address book alone. And it was the people I least expected! Now, here's the weird part. Some are from work - again, people I'd never expect - but do I want the work people to be my friends on facebook or should I keep some of them seperate? It's enough that I see many of them on a daily basis, but to see their profiles too? There are some things I don't want them to know about me too... like my trampoline collection on the third floor.