Hootsuite: I don't use social media in my personal life as much as in my professional life, but I can see hoe this will help me organize my feeds for professional information.
Facebook: I've used it for years--mostly to keep in contact with younger relatives and see pictures of their BABIES!! I rarely post anything myself, but check it a few times a day for entertainment and news. The reason I'm blogging on Facebook is that, as the new high school Student Council advisor, I now have a new use for FB. Before school let out, I asked my students if I should email them over the summer, or if their was a better way to keep in contact. They told me they check their messages and FB every day--but not necessarily their email. So--I created a new account using my school information, then created a Private Group for student council. A great use of social media to correspond with students without giving them access to any of my personal information.
I also use Twitter to follow a few tech ed professionals, so using Hootsuite to manage this type of content is valuable.
Google+ I am in a few groups with work people.