The number of sub-blogs are growing and that is a wonderful thing! However, as the number of sub-blogs grows and no official list to keep track of them all, it can be a bit jarring to discover new ones. So here's my simple request:
Use a tag on each Welcome to (insert sub-blog here) introduce post. A simple one would be Kinja Sub-Blog. Using a tag would make it easier to search all of Kinja for sub-blogs using the main Kinja search function which is here until a list or database comes out.