Newsfire started blocking ads in RSS feeds, as spotted by Niall Kennedy and Nick W.

That's not that hard hit for people in SEO industry that are producing made-for-adsense sites, but large publishers might have entirely different feelings . Anyway isn't it just a first signal of what was about to be expected? I'm surprised it wasn't launched immediately after rss ads were made possible.

Banning user agents that have the ability to block ads is improbable. After all, my Firefox browser has the Adblock plugin installed (using it like 30% of the time only, though). And, big surprise, nobody has banned me yet from browsing their web.