joined:Apr 24, 2013
Noticed a couple of weeks ago that my client had coded their <h1> tags incorrectly (they used div class="h1") so they weren't actually doing anything useful.
Recommended they change this and these changes were made last week. Ran a rank check last night and a lot of the keywords have dropped significantly.
Is this something that might happen after adding <h1> tags (note: they weren't there at all previously). I'm hoping this is natural fluctuation as Google gets to grips with the new page structure, and that they will eventually stabilise.