Hello, After a good seo work and top places for 3 main keywords for our website(web hosting,web design,website - all in greek translation), the keyword"web-design" had a huge drop in seprs!(greek edition of google) From #20-25 we drop to #40-#41 in one week! What this can be? The other seprs are high as previous. Important that google "loves" our website - e.g if we change the title, google seprs will be update with new title within 6 hours! Many Regards
It might just be Google dance. Ranking fluctuation is just a normal thing in search engine these days due to competition. Just keep on building quality links for your site to get a more stable ranking.
It could also have to do with some back-end updates on Google's Search Engine. they are testing Caffeine updates right now.
I think that is a normal thing. Give it a week or two. My site previously started high first page then dropped back and after sometime it went back to first page where it ranked even higher than previously.
It is happening around all geo google sites, I heard about it on google.co.uk earlier too. Probably, they are upgrading to Caffeine update or some bug on the system that shows this results.