These are good tips. Maybe we should collect them on the Wiki :)
Couple more: -- if you want to put your email on your page, but are afraid of spam, use the MailTo macro like so: [[MailTo(dimi AT SPAMFREE lattica DOT com)]] This will still show the address properly in the browser, and avoids email harvesting just fine.
-- please try to provide a comment when you change a page. It takes very little effort (just a few words will do), and helps a lot when you look at RecentChanges.
I'm glad people like the Wiki. It can become an amazing resource, but only if people contribute and take care of it. I think it's already on it's way of being a great development resource.
If you have any complaints, needs or wants, please don't hesitate to voice them -- I'd be more then happy to address them.