A really rude message on uTorrent forums

This is the message I saw (the message can be seen in the image below- the image can be clicked to see it in full size) when I landed on one of the pages of the uTorrent forums. I reached here from one of the search results on Google Search, and the interesting thing is that this is the first time that I have ever been to the uTorrent forums.

It makes me wonder:-

1. Why was I banned? (especially when this is the first time I've been to the uTorrent forums, and even more so because my computer obtains its IP address using DHCP)
   
2. Shouldn't the administrators or the moderators resort to less abusive language when banning someone?