I was bit confused if I want to activate this plugin as lot of functionality do come up in a single package...which can load up the server.Also there are mix reviews of this plugin.
Once I thought I must check it once...and if it does not work will deactivate it on the next go.
But I love this plugin...it added a new gallery, comments are charged up and the speed of loading the site is pretty same.
and about privacy...I don't care as I have created my personal account at wp.com which is served by my site.
Thank You WordPress Team for such a great plugin.