Online clock that along with the time, shows real time statistical info of the world. The info includes things like world population, birth, death, divorce, abortion, HIV, cancer incidence etc. You can view real time stats for one year, month, week and day.
This is apparently used by bands to broadcast info. Can you imagine yourself broadcasting to your students cells reminders about papers due dates, and other reminders.
Print a diary of your tweets. Think "Class notes" (Backchannel Info)
Archive your tweets: print to a pdf.
Add tweets & twitpics to your holiday photos.
Surprise your friends with their tweet journal.
advanced filtering and keyword searches
Great FAQ about the how and what of Diigo transition. It also has some info on the differences of the two web resources. I personally recommend Diigo over Delicious because of the highlighting and stick notes. They are a great add-on for research.
Want the 411 on Web 2.0 tools? Need help getting started with the Read/Write Web? The 5 can help! Each category features the answers to five basic questions providing information educators should know about a variety of technology integration tools, focusing particularly on Web 2.0 resources. Links to the tools and additional resources are also included.