I have a facebook page under my male name, and I have never visited a crossdressing friend or group on facebook. But I have just noticed that on the right side of my page, there is a column of Suggested Groups that includes crossdressing organizations. They can be deleted but new ones crop up every other day or so.
I am not certain if any of my FB friends can see the column on not, but I prefer they don't. Obviously facebook or google or someone is tracking where we all go online--I just did not realize they were posting such personal information on pages we supposedly control. I see ads all the time related to sites I visited, but the Suggested Groups column surprised and worried me.
Might be a good idea to check your own pages, unless you are already out to your FB friends.