If you've been using AdBlock Plus as an adblocker I've got bad news: it now allows ads. But according to the people at Eyeo GmbH, the company that developed AdBlock Plus, users shouldn't worry: these ads are "acceptable." Supposedly AdBlock Plus will only ads that are smaller and less intrusive than the ads that companies would prefer to place on websites. The change is controversial, to say the least.
I suggest switching to uBlock, a well-reviewed adblocker that doesn't allow ads.