I'm not a big fan of automation of social media but after having 4 Twitter accounts and 3 Facebook pages along with numerous blogs to manage I tried out the Buffer. I started with one specialty less used Twitter account for our medical scrubs website and really started to like it.
Buffer claims "Never flood your followers again." "Add Tweets to your Buffer from anywhere and we spread them out for you during the day". And yes it's FREE.
Here is where I'd recommend when to use Buffer:
Buffer is also available for Facebook.
