I've installed both the Thanks and Groan hacks, and then these 4 lines always appear below my avator after posting new threads and replies:

I was wondering whether there's a way to hide these lines, I mean, not to show how many times a user is thanked or groaned. Is there any method to edit it, thanks!

To hide (delete) that codes you need to go to the "postbit" or "postbit_legacy" in "Templates and Styles", and search for something like "thank" or "groan" and show us that code or delete it ;)

Greetz