Is this an announcement about banned clients or general Help section, where you can get answer to any kind of question of yours.
Anyways, the first page says, you will not be able to DL and UL with banned clients. If you do so you will be banned. In my client, in majority of torrents from DcT, i can still see banned clients in peers list. Why are people still able to DL with banned clients? Why dont they get banned?
Off topic: Next time someone asks any thing other than banned client, ask them to look into help section, rather than replying them here. These announcements look more like general help.