I have a collection of sites that are around 3 months old. Most of them were indexed pretty deep and all of a sudden today none of them are indexed anymore?? Anyone know why this would happen, as we all know it takes time to index.
do you mean all of your indexed page has been removed from google index or a part of your index has been removed?
i'm going through my sites now..a lot of my sites that were indexed are no longer indexed and some were not touched.
if you type index:yoursite and you don't get anything then you are most likely banned for doing something
It's happened to me also. I had 3 squeaky clean sites and for some reason they all got dropped in a random fashion. One day everything is deep indexed and climbing and then all of a sudden all pages from a site are gone, "site:" and "cache:" turn up nothing and all traffic disappears never to return again. The best you can do is use the webmaster central and submit a re-inclusion request. Aside from that, start working on getting more traffic from msn (yes believe it or not there is traffic there to be had) and yahoo.