Today I received an email from someone who wanted to pay me to post content on my blog. Their company would provide the text, I'd post it, and they'd pay me $25 as long as I didn't identify it as sponsored content. That sounds pretty sketchy, and, of course, I declined.
Right now, I have no desire to monetize. I've never had advertisements, but I'm not necessarily ruling out the idea. If I ever decide to place advertisements on my blog, they'll be clearly labeled as such. If I ever do a paid review, I'll let you know that as well and insist on retaining full control of my content. To do otherwise would be to compromise my ethics for money.