I used to be a member of irreality.net - that was great. There were practitioners of every flavour of magick posting ideas, testing things. There was a vibrant culture of creativity, practicality and experimentation. It was a bit like The Dharma Overground - very action-focused. Then one day we visited it and it had been shut down. Are there any web communities like that still functioning?

Hello-
Yeah, there's only a few good forums for magick that I know of.
http://salomesrevenge.freeforums.org/ is a good one- a few members of this site are contributors there, and is definitely an "action-oriented" little community.
http://liminalnation.org/ is also very high quality, with some well-known and practiced occultists lending their thoughts here and there- you've gotta apply to participate, which is well worth it.
Both sites are full of excellent conversations and information from many different perspectives and traditions!
All the best,
G.