apex:actionStatus

Good write up from Ray on how to generate a 'loading' animation on a visualforce page.

http://bit.ly/yGgOFz  Thanks @rdehler

Spring 12 Highlights

Force.com Features

Chatter Features

Sales Cloud Features

Service Cloud Features

Spring12 Developer Webinar Preview

Replay of the Spring'12 developer webinar preview is available in case you missed it:

http://wiki.developerforce.com/page/Webinar:_Spring_12_Developer_Preview

Mass moving Reports from one folder to another

Mass moving Reports from one folder to another.: Good guide here on moving mass moving reports from one folder to another using eclipse force.com IDE.  Thanks Matt.

MIXED_DML_OPERATION

This error occurs when attempting to update a setup object and a non-setup object at the same time.  For example updating the user object and a chatter group object:

MIXED_DML_OPERATION, DML operation on setup object is not permitted after you have updated a non-setup object (or vice versa):

To get around this use future method to call the non-setup object.  @future

Salesforce Governor Limits

Salesforce Limits QRG gives you governor limits for:
-App setup limits
-Chatter limits
-Data related limits
-File related limits
-Sandbox limits
-Force.com limits
-Concurrent API limits
-Storage limits
-etc...

Salesforce APIs

Ever wonder what are the differences between all those SFDC APIs?  Apex API, Soap API, Metadata API, REST API?  Here are some answers: Salesforce APIs – What They Are & When to Use Them