Search:

• Sites retool for Google effect.

• SEO projection modeling.

• How to optimize your brand's Facebook Page for search engines.

• Web's 'content farms' grow audiences for ads.

Online Ad Market:

• YouTube in drive to lift advertising revenue.

Ecommerce:

• Shiseido to start U.S. e-sales.

Politics:

• Obama's Facebook town hall a sign of times to come.

Social Media:

• Check in app Loopt introduces Loopt Qs, location-based Q&A polls.

• Twitter deals with noisy users by hiding tweets.

Mobile Computing:

• Picking out a laptop in the brave new world of tablets.

• Amazon's tablet is coming, but what will it be?

• Chrome notebooks confirmed to be released June/July.