So what if they are tracking? It's a separate issue to whether or not Facebook is controlling data / privacy too much. The same tracking issues with the Like button exist with any technology that is included on a huge number of websites, including advertising networks and Google Analytics (which expressly exists purely to track users!)
It is not inherently evil to track users. What you do with that information decides the morality of the situation. It seems to me that rolling this non-issue into the arguments against Facebook is actually harmful to the FSFs cause - why would they bother telling us about something trivial if they had real concerns to air?†
† I am not saying that there aren't real concerns, or that the FSF isn't airing them - just that airing a non-issue looks bad
It is not inherently evil to track users. What you do with that information decides the morality of the situation. It seems to me that rolling this non-issue into the arguments against Facebook is actually harmful to the FSFs cause - why would they bother telling us about something trivial if they had real concerns to air?†
† I am not saying that there aren't real concerns, or that the FSF isn't airing them - just that airing a non-issue looks bad