Social Posts is a great tool!
However, it is almost useless without a dashboard or memory of some kind of what you have posted and the ability to post in the future. I would use this all the time if I could set up say 4 posts at a time and see when they have been posted. Seems like it would run on the same tech as the blogs so shouldn't be that hard to do.
Also, I would really like to see Twitter added and the ability to immediately post to both Facebook and Twitter at the same time.
Google+ would also be nice but that is not essential for most businesses.