I've done a lot more lurking than posting. I come here primarily for info on bikes and cycling, and to discuss those issues. I have recently started sticking my oar in a bit more to CAD stuff, and I have found some of the heated debates quite interesting, the Belgrano thread was an education in itself. Some other forums I use have an outright ban on political discussion, but there is a fair amount of of politics attached to cycling anyway. As long as people are grown up enough not to carry grudges through from CAD through to the cycling bits (and to people's credit that seems to be the way) then I think it's good to have some heated debate going on.