I bought a new Droid phone, and loaded Facebook in it. Was very surprised to find out that all of my FB friends who had their phone numbers listed, well, they are on my new phone. Now I have to pour thru this big old instruction thing to find out how to get them out of there. The only good thing it is difficult to pocket dial with this phone
Funny story related to that. I don't necessarily like having all my FB contacts phone numbers in my phone, either, it can be confusing... but I do keep it synced because once in awhile it's handy. But, several months back, I was scrolling through my contacts on my Droid, looking for a friend named David. I accidentally hit the contact for a guy named David that I went to high school with, and it dialed him. I disconnected as quickly as I could once I realized, but a few minutes later.. he called me back! I was too embarrassed to answer. Since my cell# isn't listed on Facebook, I'm sure he couldn't tell it was me, but he probably wondered who the heck was calling him from Virginia (he's in Texas).
So, it may be difficult to pocket dial or "butt dial" with a Droid, but hitting the wrong contact is definitely something that can happen pretty easily ;-)