NOTE: Buffer My Post has been updated and renamed to HYPESocial-Buffer.
HYPESocial- Buffer helps you keep your old posts alive by posting it to buffer and driving more traffic to them from buffer. It also helps you promote your content. You can set the time and the number of posts to post to drive more traffic.
You can download this plugin for free from the WordPress.org repository.
Or you can buy a PRO version here: BUY HYPESocial – Buffer PRO!
More info about PRO version is available here: HYPESocial Buffer PRO