I like the metaphor - and I use it with my students - of all these web 2.0 tools as “different trapezes.” In isolation, they’re pretty limiting. We have to be “gymnastic” with them, and swing from one to the other as whim and inspiration strike us. Here’s my favorite trapeze act of late:
Twitter to Skype to Garageband to posted podcast on Blog to blog Comment Thread to Trackbacks ad infinitum
You notice my entry trapeze is Twitter. You notice my exit trapeze is blog conversations. Twitter is that indispensable for me these day