Would I accept money to write a positive review? - No.

Would I accept money to review a product/movie? - Yes.

My blog has nowhere near enough followers for this to even be an issue for me, but as far as I'm concerned, I would never lie about a product for the sake of a payday. I'm more than happy to endorse/advertise products I'm happy with, and if I get money/free product by doing that, even better! But it wouldn't change the way I reviewed the initial product/movie