As mentioned in the earlier http://bitcube.co.uk/content/community-spirit post, contributing back is important. Attending various LUG meetings, we often hear "oh, but I'm not a coder" - normally this answer isn't from people trying to avoid helping - they genuinely believe this to be the case.

Submitting a good bug report, or performing testing is very helpful. We created a patch for drupal which allows all administrators to upgrade the drupal database (previously this was limited to only the single "admin" account). If we didn't write the patch, we could still have usefully raised the issue with the Drupal community.

Often fixing a bug or clarifying an issue for one user helps ten others - so don't stay silent, report those problems, help track those issues or suggest resolutions. Coders often don't think in a manner which best suits their users. A typical example is when underlying code is exposed as "1/0" or "true/false" when "yes/no" makes more sense to non-programmers (and programmers!)