I meant that there gravitational force would be tiny.

I really didn't even think about what the size would be, although I assumed it would be small...

Earlier on someone said "oh noes were all gonna get sucked into a black hole" and then someone else said "the force would be tiny and the hole would collapse quickly."
Well sure, same thing really, tiny mass or tiny force. Black holes are actually all treated as infintesimal points so they all have the same size, the only thing that varies is their masses and speeds of rotation.

Tiny black holes would probably decay very quickly, yes, as a consequence of quantum theory. It's called Hawking radiation. The problem is that it's never been observed.