some things to check -
are the pages in the search engine index?
are the pages ranking at all?
do you have any big link rot?
make sure your hosting company did not block spiders
check for duplicate content on other sites
How about pages were indexed (site:domain.com) and nothing returned by search even the domain?
It shows only 50 pages index in google and more than 300 pages indexed in google.
I assume you mean 50 pages in Yahoo :)
If you see multiple pages indexed in Yahoo, that is a good sign. It means the worst case scenario has not happened to you. Check the items I already listed above and then do a backlink search in yahoo. You might just need some more backlinks from sites that Yahoo likes (remember Google and Yahoo do not always value the same sites). Getting inbound links to link directly deep into your site is also a good way to help the spider get your pages.
Since 10 days ago Yahoo has been very instable on results. A lot of sites have disappeared, reapeared and disapeared again. Yahoo is doing an update. My website have also been on very good top rankings and lost them.
You will have to wait a few days to see the final update and where your site is. I think your lost of positions has more to do with this update than with your changes.
Can't say if its the update or the changes. But, changed the title a little, and the description a lot, on most of my pages just about a month ago and my pages are jumping up the Y SERPs.
No other changes made.
Ok, Thanks for your suggestions but "Should I change my title and discriptions agian as it was earlier?"
A Golden Rule is "If your site is coming at top on main keyword..dont do any major changes then.."
Now here is another Golden rule: Yahoo is a poor engine - Why changing slightly a page title and description would make the website irrelevant?
Just because yahoo is unable to compensate onsite factors with any other factor, when you trigger a filter -- you are out, stupid IMO
I had the same thing happen. I changed some content on my home page slightly (to help navigation) and dropped from #2 to #37. I had done this before and only moved from #1 to #2.
The descent downward seems to coincide with what others are saying. I went from #1 or 2 (usually bouncing back and forth, for over a year) to #6, then to #12, then to #27 and finally #37. This happened over the last two weeks or so.
My Yahoo listing has no Cache link either and the add to yahoo has an error. which indicates to me that something is funky at Yahoo.
Is there a way to get the cache back or that all Yahoo's deal?