At my wiki, I don't try any SEO tricks at all. I just write a lot of content and focus on submitting to social news site and post my wiki on in certain forums to get feedback. Eventually, I just stop doing them.
Eventually, the search engine traffic just overtook the organic traffic that I have built over the years.
I still don't know why search.live.com show up consistently as the #1 referrer to my site even though it is completely about FOSS.
Google "MSNPTC". Last I checked, nobody could understand it, but it's a weird bot. I had it hammering one of my sites with bogus referrals. Many hits per second. I just blocked it.
(ModSecurity is a fantastic Apache module for blocking bots, attacks, and all manner of junk, btw)
Eventually, the search engine traffic just overtook the organic traffic that I have built over the years.
I still don't know why search.live.com show up consistently as the #1 referrer to my site even though it is completely about FOSS.