Guys, This is bizarre to me but it's doing my head in so want some advice. I have 2 separate sites. Both use the same template with different keys and different content. Both are about 6 months old. Now they both rank 2nd and 3rd in google for their keywords BUT not at the same time. One site ranks for its key for 2 weeks then disappears and the other one appears for its key then disappears. The process repeats endlessly. It's almost like google sees them as the same site but there's no shared metas or content at all. What's goin on??