These particular topics have the annoying habit of turning from rational discussions to personal attacks on other people. Stick to the topic of any given forum and save touchy subjects for forums designed for their discussion. Remeber, most people are online for enjoyment not for a fight. Discussions are always appreciated but arguements are not. If you have found an online service you really like, participate.
Many people spend all their time merely downloading the neat files that systems offer.
Answer any questions you can and get involved in the conversation. It is a small price to pay to insure that your favorite system continues to thrive. If you appreciate what they have provided, let them know. I can guarantee that no sysop will ever turn down a few extra dollars towards the operation of their system. Some sysops will ask for donations towards new equipment as well.