In the last few days, I have been dropped from Yahoo. I didn't know how much traffic they brought me until they dropped me. I noticed the Yahoo Slurp keeps coming to my site and looking for my robots.txt file, but I don't have one. Could this be a reason for being dropped? They did go to a few other pages but nothing shows up in searches in the last few days. If I do a search for site:mysite.com, I'm still there. Is this bad news for me. Am I just getting dropped and have a long road back or what? I'm also noticing now that yahoo dropped me, yahoo users bring a lot more sales than google users.