Here is some advice to avoid being banned.
They DO ban accounts and consoles.
DONT use any homebrew from XMB. I moved some homebrew apps to the XMB under PSN and it sends the information to $ony. Leave it under GAME and it doesn't send anything. All it will do is ask PSN if there is an update.
You can use CHARLES to spoof it. I can run any homebrew from XMB and it'll say its PlayTV. Still its a huge risk to run it from anywhere except GAME.
There is an app and tutorial that tells you how to make a homebrew group on XMB (Changes TV to homebrew). REALLY bad idea. It'll tell PSN what your running. This is what it sends when you run MultiMan from XMB under PSN.
DONT connect to PSN without a Console ID. They can see the account your connecting with and ban that account as the console id is missing. Yea, you can connect but its a huge risk.