Caffeine

Caffeine will affect search rankings in a very minor way, but is a nice architectural update.

http://www.mattcutts.com/blog/google-caffeine-update/

WebCEO

Web CEO is a cracking tool for doing search engine optimisation analysis.

Good Content

Good Content remains the single most important factor in search marketing. And will be forever.

Web-master Tools

There are a whole bunch of webmaster tools for different search engines.  They help you identify problems with your content, deal with content issues, and upload xml sitemaps.

Personal Bing Issues

I’ve found Bing to be very poor. Trying to add Smarticles digital creative agency to it, I have a lag of 4 weeks compare to Yahoo and Google. I submitted a sitemap,  and have followed best practice. Ask even found me by its self (pretty impressive, as I had forgotten about it).  But Bing still Bing’s badly.