Here are some sites which we have found to be informative and up to date. The search engine world keeps changing, so even these sites can become outdated occasionally. For example, even Microsoft’s submit-it.com site listed below has outdated information regarding how long it takes to get listed. We advise paying most attention to these sites’ tips on what to do and what NOT to do when optimizing your sites:
www.searchenginewatch.com
www.submit-it.com/subopt.htm
www.highrankings.com
www.sofer.com/research/searchmain.html
www.bruceclay.com