There is a channel, devoted to Zabbix discussion on the Freenode network - #zabbix. Use one of the many IRC clients to connect or web client. There are some IRC-specific guidelines:
Freenode also has a German language #zabbix-de channel, as of August 2012. All of the above applies, besides the language, of course!
- Do not ask to ask. There is no use to ask something like "can somebody help with something Zabbix related" - that's what the channel is there for. Additionally, this would require somebody to confirm, then you would ask the question, while you could have asked the actual question and received the answer already.
- Allow for some time to pass after asking the question. Do not assume that everybody in the channel is glued to the screen - there are real life duties and there are many different timezones. It might be middle of the night for somebody what is middle of the working day for you. There are also different holidays around the world. Given these circumstances, it is suggested to stay at least 24 hours in the channel after asking the question.
- Do not repeat your question all the time, it will only get people annoyed. Having said that, repeating a question might be appropriate once a day if there have been no responses.
- Do not split your sentences in a lot of lines - that is hard to read. Or, in other words, "do not use enter instead of space".
Freenode also has a German language #zabbix-de channel, as of August 2012. All of the above applies, besides the language, of course!