Ding! Ding! Round 2!
@sfdc_nerd
Becka launched Chatter in her organization by first testing it in a sandbox environment for two months, then officially launching it over a weekend.

Salesforce Email Services- Where is “Delete” Button?
@abhinavguptas
What to do if Delete button is not coming on configured Email Services.

Video- Getting Started with Rails & Database.com Gem
@jeffdonthemic
Since salesforce.com bought Heroku last year, it might be a good idea to start learning ruby. Here’s a video to help you get started.

Upload Contacts from CSV File in a Visualforce Page- Source: Ranjeet Singh
@sfunearthed
A sample code that lets you upload contacts from a Visualforce Page using a CSV file.

Developer Contest Contests!
@sbob909
New developer contest, “Mobile Hybrid;” submit an article that demonstrates how to build a web application using the Mobile SDK hybrid approach.