I have come across a couple of interesting new blogs in the last few days.
Chris Baldwin - Program Manager for Reporting Services
Has an interesting first post on reducing the amount of merged columns when exporting a SSRS report to Excel
Elizabeith Vitt - from SQL Skill
Has 2 good posts up, one about how attribute relationships affect aggregation designs. This is well worth reading, I think this is an area that is going to trip up a lot of people. I don't think there is a lot of understanding out in the SSAS community about how attribute relationships should be configured. Her second post is about importing pefmon data into Profiler - a handy thing to know when performance tuning SSAS.