A couple of social media personalities have recently decided to scale back on their use of the newer, micro- and real-time services like Google Buzz and Twitter. Partly, they say, due to a lack of control: specifically, the de-emphasis or outright loss of their personal archive. Others observe that social-stream clutter may be causing a decrease in two-way conversations. Indeed, Twitter seems more ephemeral than blogs or even Facebook status updates. And I miss the bloggers who used to offer a bit more than 140 characters in their link commentary, especially when they replace it with less frequent, essay-length posts. What do you think? Is micro-blogging ruining the medium?