Fricandy
@cloudcoder
A few suggestions on how to use HTML5/CSS3 to visualize your Salesforce data differently.

Social Single Sign-On- Authentication Providers in Spring ’12
@metadaddy
How to use external authentication providers such as Facebook to access Salesforce portals and orgs.

Big or Small, You’ll Love the Social Fleet- Salesforce of Things
@ReidCarlberg
A video on The Social Fleet, an application that helps you monitor and manage your fleet using the Force.com platform.

Video and Slides for Spring ’12 Webinar Available
@joshbirk
The Spring ’12 developer webinar is now available for viewing.

Forcing Opportunity Creating During the Lead Conversion Trigger
@_siddhesh
A trigger that throws an error message if the Create Opportunity check-box is not checked.