I have long been a fan of the Jedox product for its write-back and text capabilities in OLAP. Its ability to publish Excel pages to the web (server) allows reports (and input forms) to be created quickly. There are some very impressive methods for write back and it can be a great piece of technology (in the right environment of course)!
Now, thanks to Chris Mentor there is a new practical blog about using Jedox with tips, tricks and explanations. If your interested in the product or want to extend your understanding of the toolset then the site should be on your reading list.