Meta tags are a good idea. I know there is at least one Mediawiki extension that can help there. I claim ignorance on which meta tags to add to help with SEO however. Meta tags we should have a discussion on this but I would personally prefer openSUSE 11.3 as one of them so that search engines can focus more on our present distro however we can have a discussion about this over here
That sounds good. We'll probably want to use that MW extension then.
I'm not sure what you mean with the last sentence. Do you mean submitting sitemaps for our RSS aggregation?
No Our planet feeds, news feeds etc at technorati and other blog submission sites
I don't have any control on planet.o.o, but I have noticed that it's not indexed too often. I forget who the admin is for that site. You did remind me that I still haven't done much for SEO on the blogging sites. I'll see if I can get some sitemaps going there.