[DJB]

I keep my networks separated in mainly two kinds: Facebook and online forums.
I only use Facebook for social networking to keep in touch with friends, family and other non-business related social networks. I think a social community as Facebook should remain for social use only and not business purposes.

When it comes to business networking I strictly use online forums. Like Brian mentions earlier in this thread - the audience is usually much better targeted.

I make a big effort of not trying to make these to networks interfere with each other, unless one part from one group has a relevance to the other. I do not like to speak to people about my plans, projects etc., if I find them not to have any relevance to the subjects. This also leaves me with the great options of sorting out my networks very easily - if they do not fit in one group, they will fit in the other.

Not saying it is the correct thing to do, but that is just how I prefer it.

Weird some might say, but I guess we are all different.