I was over reading some of the comments posted on Mark Russinovich’s recent blog posting on his first week at Microsoft and found many of them to be pretty annoying. (See: The First Week).
Live Spaces allows you to configure your blog to allow comments from anyone, allow comments only from people you have desiginated as friends, or to disallow all comments entirely. It would be much more useful to be able to configure one’s blog with a much more sophisticated set of rules that govern who can post comments and who can not.
For example, it would be useful to be able to limit comments to people who are N-levels of association away from me in a social network, or who meet some complex set of criteria based on their profiles (e.g. have worked in the computer software industry for more than a decade, have started their own business, have agreed to basic guidelines of civil discourse, etc.).
The idea is not to limit dissent. Rather the idea is to promote constructive dialog with a high signal to noise ratio.