This week's SEO-related articles feature a look at eBay's Google AdWords case study (it hasn't worked for them), an Author Rank cheat sheet and a manifesto every SEO copywriter should read.
eBay has been less than kind about Google's paid search. @gsterling in Search Engine Land looks at what's brought on the dissatisfaction. AdWords "Ineffective" Says eBay, Google "Meta-Pause Analysis" Contradicts Those Findings
@CindyKing has put together a very useful list of blogging plugins and tools recommended by the professionals who blog in 29 Tools to Enhance your Business Blog
This one's from a couple of weeks back but was shamefully missed at the time; by Greg Habermann on Search Engine Watch: Top 5 Google Analytics Changes You Might Have Missed
Everything you need to know about Google Authorship in The Writer's Author Rank Cheat Sheet by @demianfarnworth on CopyBlogger.
@leeodden has very diligently put together a list of 40 definitions of "content" by internet marketing experts in What is Content? Learn from 40+ Definitions
There are plenty of Facebook Search Graph tips in Inside Facebook Graph Search: Finding People, Photos, Interest, & Places + Visibility Tips From #SMX by Anna Pedersen on the AimClear Blog.
There are copywriting tips in here that you should memorize every single time you sit down to write a piece of content: The Inbound Marketing Manifesto by @rebeccabridge
