I’m leaning more towards using Twitter for more public stuff (new blogs posts, interesting articles, opinions) and using Facebook’s status message for “Friends & Family” style announcements.

I should add that Jim Long’s Twitter feed is one of the most entertaining I’ve come across, as he routinely engages in audience-participation exercises while he shows off Twitter to his “real world” friends.

I personally limit my Twitter friends, and keep my feed private, partly because I only want to share with those I know, and so I don’t have too much to plough through in my feed.

Of course I can choose not to follow someone who post too much or whatever, so I have that option.

I have used tweets to describe personal stuff, but also to mention a blog post or something I might have found that could be interesting to my friends, and it works well for all of this.

One thing to note — if you have a company and plan to use Twitter to make money, I think they might want to work out a deal with those companies (probably depending on volume). I heard the founder, Evan Williams in a podcast with Jason Calacanis, and he mentioned they try to make deals with those using Twitter for more overt commercial purposes at larger scales.

I would guess a freelancer, or member of a small company using it for business is not at this level, but I suspect Woot! has struck a deal with the Twitter folks.