Actually, there are a few people I am 'friends' with who I would cross the street to avoid but sometimes they're facebook posts are better than watching Jeremy Kyle so I keep them there for entertainment purposes.
Used properly fbook is great - I have (real and virtual) friends all over the place & it's great for keeping in touch - met one or two nice people through it too ;=)
If you are desperate enough (for scrabble or marigolding) you can probably find me - we must overlap AB/FB friends somewhere I guess - just look for the handsome dave with the motorbike ;)