I don't know but from some days(over 1 month) Google is gradually deindexing my all pages day by day. Today In my sitemap I have 163 URL, but indexed url is only 95, yesterday I had 161 URL and indexed URL was 99, day before yesterday I had 159 URL and indexed URL was 106. In past when I had near about 142 URL, every page was indexed well and all in first page of Google. Also note this, in yahoo all pages have been indexed very well. In addition today when I visited webmaster tool, option for faster crawl was available. (which i have enabled today) I think this can be only happened if my server is slow or google has given me penalty. I cant decide in actual what is true. Can you tell me what is happening here? I have attached a chart which i got from webmaster tool. Thanks in advance.
big G has been deidexing some of my sites lately as well could be dupe content penalty or something else