No fees?

[MZZM]

Can somebody explain why some pools take no fees at all? How they pay for their servers.

Personally I`ve got best results on deepbit with it high fees than on other pools. So maybe there isn`t no fees at all, as pool owners say in their topics?

[hart]

Most no-fee pools rely on donations. Users contribute as much as they want to, and often gain various perks for doing so.

For example: https://www.btcguild.com/my_perks.php

[zaphod]

If the network were more transaction intensive there would be some payment from transaction fees, but my guess is that it's really limited right now...

Edit:
BTCGuild publishes detailed data.  Their fees are 0.2% of their revenue.