Social networks

• Facebook
• LinkedIn
• Flickr
• Picasa
• 43 Things

On-line software

• Google Docs
• Picnic photoeditor
• PhotoFunia - funky photo effects
• Sumo Paint
• Pixlr photoeditor

Services

• Box.net - file storage and sharing
• My bookmarks on del.icio.us
• Stixy - online collaboration board
• Doodle - schedule an event
• Cometdocs - online file converter

Other good sites

• TED - Ideas worth spreading
• The Huffington Post - Breaking news and opinion
• Grooveshark - listen to free music online