In the Standford Law Review (http://lawreview.stanford.edu) Volume 61, Issue 6, April 2009, Rachel C. Lee wrote an interesting review "EX PARTE BLOGGING: THE LEGAL ETHICS OF SUPREME COURT ADVOCACY IN THE INTERNET ERA" (http://lawreview.stanford.edu/content/vol61/issue6/RLee.pdf), discussing this very issue. Rachel opened the review with "Lawyers have been arguing their cases before the Supreme Court for over two centuries, while the phenomenon of legal blogs is perhaps a decade old. Yet legal blogs cannot be dismissed as merely a sideshow novelty--they are already capable of having a substantial impact on Supreme Court litigation.". She hit on many key points both for and against the use of blogging but ultimately concluded that members of the Court and their staff would have to refrain from reading any blog post relating to a pending case, no matter who it is written by, and carefully drafted rule preventing blogging by attorneys is a task to consider.
I knew they took President Obama's Blackberry away, but it looks like they will have to block blogging sites at the Supreme Court now...perhaps NetNanny (http://www.netnanny.com)??"