Google changed their algorithm at the beginning of the year.
Few people realize this.
Static and "historical" content are now not indexed as well, regardless of
SEO.
Dynamic and updated content are now given priority over stuff like WikiPedia.
Google found that most of their users were going 2-3 pages deep in searches for news and updated content and bypassing all the rest.
Right around the beginning of the year (actually had been tested since mid December), there were countless reports of sudden
PR rankings drop and sites on page one were now page 7 and 10.
So yes, there has been a serious rethink by Google. And good news for those that do have sites or blogs, right Theo? I've seen yours a few times.
My reference is directly from Google and not from a secondary source. I thought I had posted this earlier on this forum.