I was doing some checking of keyword rankings over the last few days. I saw that 75% of my targeted keywords are on the first page of google (yes even after panda and arctic bird updates). However for Yahoo and Bing ...only one or two keywords are on the first page (and even then they are way down in position 9 or 10). Should I bother worrying about the keyword rankings in Bing + yahoo. Bear in mind this is NOT recent, it has been like that (for Bing and Yahoo) for almost two months. Lastly, in terms of SEO should I bother doing directory submissions as i keep hearing conflicting answers?