Have site in several niches on same server/ip and never any issues. Sites are up to several years old and all the sites in same niche are not listed as of last couple days. I have not done anything out of the ordinary so just wanted to see if anyone else has seen anything similar from yahoo and bing lately. Same niche sites are also de-indexed in bing. If i check the site: url nothing comes up btw. Maybe an algorithm change taking effect, or somehow sites in just that niche were hit on my server...which is weird but possible? Any ideas?