Broken Rated 2 out of 5 stars
It's not updated and hopelessly broken these days. Fails loading the video on metacafe when I click. Some times just got whitelisted by themselves and I couldn't untick it on the flashblock button. They didn't even appear in the list in the settings window. I had to delete the whitelist.
It started blocking the pdf viewer plugin once and I had to click three times for the document to load.