Steam forums and support are pretty bad. I sort of understand why they don't hire more customer service representatives but at the same time wish they did. Its 2013 and snail mail as their main support is pretty antiquated by todays standards.
As for the discussions themselves? Pretty trash. Waste of space format, multiple languages to sift through, mods are all over the place and 90% of the topics seem to be from delinquents that have no idea how to use a computer.