Social Media:

• Major changes expected at Facebook's f8 conference.

• Facebook employee reveals killer Facebook music feature in deleted tweet.

Legal/Regulatory:

• Senate antitrust hearing sees Schmidt defending Google.

Mobile Computing:

• Mango to appear in next two weeks.

Convergence:

• TV Everywhere is coming to Google TV.

Blogging:

• WordPress adds follow button to drive traffic.

Ad Technologies:

• YouTube converting 2D videos to 3D, removes 15 minute limit for verified users.

CRM:

• Salesforce has just bought social customer service SaaS startup Assistly.

Search:

• Bing rolls out Action Buttons.

People:

• AOL Patch sales head defects to Google.