Some say things will be different, some say they won’t. I think there will be differences and so do others. Here are some interesting articles on Bing Yahoo and SEO
Microsoft/ Yahoo Deal Already Reshaping SEO – Search Engine Journal
What Micro-Hoo Might Mean For Local Search – Matt McGee at Search Engine Land
SEO Community Worried About Yahoo’s Tools – Search Engine Roundtable
Yahoo-Bing Promises More of the Same – Search Engine Watch
Top 10 Things the Microsoft/Yahoo! Deal Changes for SEO – SEOMoz – Rand Fishkin
Melissa– SEO Aware