What happen with Bing.com? I have a lot of sites that used to indexed at Bing.com. But today I check and very surprise because all of my sites or subdomain appear to 0.
what do you mean appear to 0? When you search for the actual domain name (www.example.com) in bing can you find them? If not, then it does sound like you've been removed from the index. If you're searching for your sites using keywords, then it may be that you've just been re-shuffled.
I mean it like to removed but I misunderstand about this affect because it not used to make this before. Or they begin to use some algorithm from Google?