Warning: Use this script at your own risk.
As with any script.
It's not open source, the script is encrypted. So, if he hide any exploit or backdoor in this script, you won't find it.
As has been said earlier in the thread, the script can easily be decrypted to see all of the code behind it. I haven't personally found anything suspicious when I looked through it, however I did not look in detail and only really looked at the claiming/withdrawing parts of the script.
User is newbie.
Irrelevant.
Topic is self moderated.
I can't say I much understand this either, though providing that he doesn't delete any comments such as yours then everything should be fine.