Is it okay to submit your site or sitemap to both bing and google? I tried doing this two years ago. After I submitted in the Google webmaster tool, our traffic significantly improved in 2 weeks or so. And then I submitted to Bing/yahoo, our traffic started to significantly drop. Because of that, I took our bing account down. Although, I did not really gave it some time before dropping the bing account. The slip in traffic was just terrible. What do you guys think? Did you have the same experience? What can you advice?