Google+: attribution on Google, and embedded posts - Google+ Developers ...
Official source of information about the Google+ platform
Google & Bing Click-Through Rates - CTR Study - Slingshot SEO
A Tale of Two Studies: 2011 Google vs. Bing click-through rate study conducted by Slingshot SEO. The first major comparative Bing CTR study.
How to Use Google Analytics Guide – Updated Feb. 2012 - Slingshot SEO
This guide is intended to outline some of Google Analytics' most useful features, including: Profile Management, Goals, Filters & Au