two ways to make blog public

I'm writing in haste, so I'll keep this morning's posts short. But, yes, I think it might be good to open up the blog a little. There are two options really: (1) completely remove any restrictions on access, the only possible problem being that people might find it through google's search engine (although perhaps you can ask them not to include it?), or (2) keep it a private blog but give others access on an individual basis. I'm sort of erring towards (2) but don't have strong views either way. Any thoughts?