Is Facebook the Answer?

So, making this blog private means that anyone who wants to read it has to a) get a google account, and b) sign in to see the blog. 

I'm not thrilled with that.  But, likewise, not so thrilled with the public domain.

I am considering using facebook as my means of info.  It's imperfect, and I don't love the idea, but it would be an update mechanism and I could easily control who reads what.  Thoughts?  Concerns?  Ideas?  Most of you all are on facebook, and those who aren't I will happily "friend" if you find me...