If I get something for free, or at a reduced price - which is highly unlikely, seeing as I've left all the brand/blogger groups and don't really want to do that anymore - and talk about it here, I will definitely tell you.

If some subversive, sarcastic celebrity decides to sponsor a post, I will definitely brag about it.

If I do the affiliate thing OR link to my own products (which are still in process), not only will I definitely tell you, I'll repeatedly tell you.