I have been doing really well on the keyword spain real estate and was 2nd or third place for months then suddenly nothing cant find my site anywhere. I am on for other keywords but not this. I have checked www2 and www3 but no where to be seen has google changed its ranking system so dramatically?
Yes, there has just been a major change and you're not alone, a lot of people have experienced big changes in their rankings this month. There are a lot of opinions, but of course no one but Google knows exactly what changes have been made. We've got a lot of discussions going on about it now, so just go through this forum and you'll find many posts about it.
It's not impossible that there will be adjustments next update, so while this is a good time to go through our sites to see what can be changed or improved, it's probably wise not to worry too much until after the next update.