Who says that ads are for sidebars or banners. Which is less disruptive and more meaningful for readers--a banner full of google ads, or perhaps a single post every 10 days or so with some engaging copy and legit links that are at least a little bit interesting? Identifiable as paid content, there is no reason those of us who publish for a living shouldn't run a paid blogvertorial once in a while. In fact, I'll throw in the copywriting too.
I'm experimenting with the idea on ebay.
Could be meat, could be cake. We'll see.