[Periodic]

I had a few problems with the blocking when actually going to the sites in question. I believe I had to unblock Google Plus, Google Analytics and Facebook when actually visiting those sites.

However, I'm happy that most of the time it prevents the annoying features of a page from loading.

[JonnieCache]

I've never had that problem. That'd be a pretty big flaw in ghostery if that was the case.

[cpeterso]

I've had problems with Ghostery blocking cookies and web bugs that prevent some Flash videos on YouTube, Hulu, and the New York Times from playing.