I'll expand on nonnakip's answer:
How does using the nasty mining p2pool work? Do the coins get sent to an address you specify
Yes, the coins get sent to an address you specify.
You mine at:
http://nastyfans.org:9332Use <YOUR BTC payout address> as your username and "x" as you password. Example:
Username: 1NastyFRkeUTmMdbMmzggDVTQA6r3ibUoX
Pass: x
Warning: it's better to use a real wallet address. Do not use an address from exchanges, etc. P2Pool pays using "mined" transactions.
Additional Info: There is no account to setup, just start mining. To check your progress, click on the link above with your web browser and then click on "Graphs." Search for your BTC address to view current hash speed and payout rate.
can you have proceeds donated to your personal fan club account,
No.
does it include alt coin trades etc.?
No.