Tips: Categorize Blogger Posts (version2)

In a previous post, a tip to build blogger category list is given. It is a trick based on a site search engine --- pico. The idea is simple: for a post belonging to a category, insert a keyword that appears only in this category, and provide a list, where each entry links to a search result of 'pico'.
The reseaon to use pico is for it can rebuild index when u want, and it can index words in very detail.
The shortcoming of pico is that it can only rebuild index on demand, it will never index automatically. Now, I shift from pico to blogdigger, a very nice blog search engine. You can see the effect of blogdigger in the right panel's category list. Most parts are the same as the previous post.