Well, 2 cents from someone that is in the internet marketing environment since more than 10 years.
This automation software is fair superior to its paid competitors; learning curve is much shorter, you can go from zero to hero of web automation in just some days with this tool.
Script logic is flawless.
The negative thing is that, when you go multithread, is still a lil bit unstable compared to its competitors (ubot and zennoposter), cause the software is still young. Stability and usability while multithreading should be increased (ex, change number of threads during execution, delay additional threads starting, etc)
Also today, cause of a change in recaptcha, a bug appeared in the recaptcha 2.0 solving procedure (wrong image gride size), but i'm sure the developer will fix it in no time.
9/10 software, and unless you need to sell your script, is basically free (but still i suggest to buy the premium, to support the developer).