Just wondering if Facebook normally has access to my Gmail contact list and Utube browsing history, or have I got a bug that's letting it do this.

I was going through my "Friend Suggestions" list on Facebook and most of the suggestions have mutual friends which is understandable. But there are quite a few on that list that have no mutual friends and the only contact I have with them is an occasional email.

With the Utube, I watched a clip for some gadget on a forum. Can't remember if I went to the gadget's website, but now an ad for that gadget appears on my FB page feed every day.

I can cop the ads as they fund the interwebz, but I'd like to think my email contact list is more secure.