It has come to my attention that newcomers have no idea where to point their hash power. Here are the pools that I've tested, are stable and can be easily contacted in case of problems
Skein -
http://myrsk.nut2pools.com/ (if nut2pools has any other algos running I would recommend them, they are stable and comunicative)
Groestl -
http://eup2pool.cryptopools.com:3333/static/ (P2Pool, only one I used but since the others are identical in setup I presume they work like a charm too)
Groestl -
http://usp2pool.cryptopools.com:3333/static/ (P2Pool)
Groestl -
http://asiap2pool.cryptopools.com:3333/static/ (P2Pool)
Scrypt -
http://myr.nut2pools.com/Scrypt -
http://myr.coinsprofit.com/SHA256D -
http://myr.poolerino.com/ (reputable, Mike is always online and responsive)
SHA256D -
http://ispace.co.uk/ (very reputable and stable)
SHA256D -
http://myriadsha.cryptopools.com/ (ahmed_motherfucking_bodi)
Qubit -
https://cpu-pool.net/myr/ (have not mined qubit, but I presume they are doing well since we had no complains)
Qubit -
http://myr.nonce-pool.com/ (same)
For other pool owners this list is not meant to promote pools but to recommend pools I have used and have always been stable and quick to solve any problems, so if you feel left out I am sorry and you are free to advertise your pool.