It's a sham. Pure and simple.
It offers to auto-post to 20+ social networks and when you try to actually do it after installing the plugin, it takes you to a shaddy website called LinksAlpha where you have to create your account. When you do create your account, it automatically says that your trial period has expired and you need to upgrade to a PRO plan [Read throw away money at these dogs] to be able to use the plugin.
If that wasn't enough, I did a research on this lame plugin and it seems it comes packaged with some serious security vulnerabilities.
You're far better off using the Nextscripts Auto Poster plugin. Great plugin. Completely free. Not strings attached unlike this sorry excuse of a plugin.
Steer clear of Links Alpha company and any plugin they come up with.