I have a site that's been doing the 'Google Dance' for almost a year now. It literally goes from #3 on the 1st page for it's target keyword, to somewhere on pages 5-10, and it does this in 3 to 4 day rotations.
In other words, day 1-4 the site is MIA, then on days 5-8 it's at #3 or sometimes #4 on page 1, then rinse and repeat.
This isn't just my search settings, I can verify it with traffic reports, click counts, everything. This happens whether I'm building links to it or not. Even if I leave it alone it keeps happening.
Clearly I'd like it to stay on the front page of google and stop dancing. This has been going on for a LONG time. Any ideas?