I love Seller Tools! My stats increased from 30 a day to 685 a week! I will always use Seller Tools. It helped increase my posts on Facebook, Twitter, and Pinterest. I don't have the time to do all those posting on my own.
It's amazingly convenient for posting to my shop's Facebook page! I just set it up and then forgot about it which is awesome cause that's the whole point, to save me time and energy promoting my shop while I can direct my attention to other things!
I love the Favathons! It sure has put lots of action to my store. I also like scheduling my tweets and Pinterest posts to more then one Pinterest board. It's great that I can do sales and social media schedules in one place instead of using EtsyOnSale and AroundIO. It is a one stop do it all!