Jakob Nielsen is enthousiastic about the new UI paradigm which will be premiered by Office 12. The preliminary results are promising; this UI is WYGIWYS - What You Get Is What You See, or results-based interaction.
The google web accelerator is back. I wonder, if there are a lot of users seeing a Google cached version of your website, won't that affect your statistics?
Roll your own search engine. This web applications let's you create a personal "search engine" by adding only selected websites and/or tags and/or searches created by people you trust. It thus builds a trust/authority system for searching.