I found another drawback of using Tor

I have to enter capcha each time I send PM and I have to wait 360 seconds to send it (even if I didn't send PM's today at all). I think It sould be 360 seconds per account not per IP.
No, that's just a restriction for newbies to prevent PM spam/scamming, I think.
That's why points of evil are in place right now. If you're using any service to hide your IP then you'll get points of evil.