Hi guys, My website was on top positions in Google, but then suddenly they have dropped out of top-100 in google, and only 2(the most powerful) have left in top-100 but on very low positions(70-90). It was 2 days ago. And what you think today I noticed that in Google webmaster tools my website has the same postions. So I don't understand what is the problem. Really will be thankful to you if you will help me. Thanks in advance!
Google webmaster tools status does not update everyday. After 1-2 week you will get current details. Check you backlinks profile.Most probably you lost some good backlinks. Or it's a Google Dance.
It is usual thing in google, specially it happens with new sites. there could also be some more reason for it like frequency of fresh incoming links. If there are no incoming links pointing to your web page for a few weeks, you will find a drop in your rankings in Google. This is because of the freshness relevancy. Search Engines loves fresh incoming links and this is one of the ways to make sure that your site is still fresh and there are people linking to you for your content. So make sure you put up a great piece of content to draw in some links from other sites at least in a monthly basis.
Wait 3-4 days and if the problem persists leave here a url and will give you some answers. If you're site is new, don't worry. Thats happens a lot with new sites. They first get a boost in serps and then they came back to normally.
May be you site had high PR but poor back links. PR dropped its value now. Try back-links from local sites from similar content site or domain.