By rights you should be answering that question with sites like Silverlight.Net and if you're not getting that answer, my comments and inbox are wide open for your commentary as in the end our goal is to provide less friction as possible to ensuring you're kept up to speed on the ongoing's of Silverlight.

That being said, Wynapse's "Silverlight Cream" has a great list on what's happening in the overall Silverlight blogsphere. I've use blogs like these many times as it helps me keep track an eye on what problems are customers are facing in the wild (it's good to keep your best ear to the ground)

Silverlight Cream:
SilverlightCream.com

Remember, we don't know what we don't know
so if we don't cover something you like, let us know today, so we can fix it tomorrow.