Here's something that I hadn't given much thought to - multi-user blogs and searching by author. It seems pretty obvious that you would want to be able to search that way if you had a multi-user blog. Silt has actually supported multiple users since the beginning, but none of the blogs have operated that way.

The marketing folks are looking to set up a multi-author blog though, and search by author is one of the things they wanted. So... I did that just now. As it happens, search by author works pretty much the same way as search by category does. I use the same kind of caching scheme, and the same paging mechanism. I simply had to add a new page argument, a new cache object, and make sure it all got saved/restored - and boom, it just worked.

I don't have that option running anywhere (other than test) at the moment, but it's supported. Pretty cool, and very easy to add.