There's a research study being done on WoW AddOn Authors:
http://karlkfi.wufoo.com/forms/wow-addon-author-survey/
It will look at the electronic communication methods and tools that they use and prefer when receiving feedback and bug reports from their users. When its finished it should provide an interesting report on the available tools, which is most preferred and how you can benefit from each type, not to mention some nifty demographics graphs.
Head over to the survey and take it!