If you'd rather not have some wet-behind-the-ears Victoria's Secret Webmaster pondering your camisole predilections, you can tell your browser to refuse cookies or to prompt you each time a Web site wants to write one to your hard disk.

CNN: Guard your online privacy

Then they got researchers at each site to classify the behaviour into one of six categories, according to what was appropriate for their site.

ECONOMIST: Chimpanzee behaviour: Culture club | The

Between classes, on the bus or before going to bed at night, he would type single sentences into his phone's tiny keypad, uploading each one straight to the mobile social networking site Mobage-town.

CNN: Cell phone stories writing new chapter in print publishing

You can create these folios from scratch, or customize one of 75 templates on the site, each designed to match a certain style or sector, for example, large cap, aggressive growth, biotechnology.

FORBES: Custom-Made Mutual Funds

It takes courage to feature just one product on the home page of a Web site as Apple does with each new major product launch.

FORBES: Steve Jobs: Get Rid of the Crappy Stuff

Yes, UK Twitter users were up from four million to six million in a year, but each one is spending just 24 minutes a month on the site.

BBC: Is Facebook still making friends?

The 15-person staff at Craig's List, the popular community message board, acts as a rapid response team to keep people from harassing each other by name before one of the 150 search engines that index the site grabs the offending page.

FORBES: Google Me Not