Topics for further research

• Wordpress / Movable Type plug-ins
• More blog widgets than you can shake a stick at.
• Start pages: Netvibes, Pageflakes, Google start page
• Backpack -- web-based personal info manager with great shareability tools.
• Notebooking and information organizing and storage tools: Yojimbo (Mac), Journlr (Mac), DEVONthink (Mac), EverNote (Windows)
• Web-based collaboration tools: Google documents, Zoho, wikis, Meebo
• Desert island Mac applications: Quicksilver (here's a beginner's guide to Quicksilver and more info on getting started with Quicksilver), Growl (sends notifications from background applications so you can get information from them without having to switch applications), VirtueDesktops (great virtual desktop app for setting up multiple workspaces, however sadly won't be updated any longer)
• Web-based operating systems: YouOS, Goowy, etc.
• Working more intelligently with statistics -- Mint, Google analytics, Crazy egg
• Write smarter: Markdown is a text-to-HTML conversion tool that helps you write more naturally and later convert to properly formatted HTML.
• The cult of GTD: Getting Things Done

Great websites for picking up workflow tips and GTD ideas

• 43 folders
• Lifehacker
• Lifedev
• Lifehack.org
• Download Squad productivity category