Bloggers not responsible for comment?

As some of my friends on this website have might have noticed, I was threatened by Carphone Ware because of supposed defamatory comments made on this page

Here's an interesting article on BBC News about a case (in USA I should add) where a blogger could not be sued for the comments other people placed on her blog.

"Overturning a decision by the San Francisco appeal court, the court ruled that people claiming they were defamed online could now only seek damages from the original author of the comments - and not the website which re-posted it."

I need to think a bit more about it before I resurrect the currently removed comments from the page about Carphone Warehouse.