Has Facebook gone to far by implementing “social plug-ins” on over 100,000 sites?

This plug-in is allowing Facebook to bring users friends lists to external sites and showing them their friends’ activity. For example, a news site could show you which stories your Facebook contacts have been reading and recommending. You can easily “like” a site by clicking the plug-in and not having to actually sign into Facebook.

Some sites like IMDB which allows members to share their favorite movies and TV shows on their profiles have seen more then 350,000 “likes’ since integrating the plug-in.

Facebook recently conducted a poll in the US between adults 18-34 and those over 34 to take a deeper look at the users perception of the Facebook brand. The poll was based on -100 to 100. While the 18-34 demographic rose from 32.8 to 44.8 the older group slid from 26.7 to 21.2

What group do you fall in? Has Facebook gone to far with possibly sharing users private information?