Due to the rapidly accumulating user content, a natural question to ask: what is the current idiom of looking for blog posts and comments containing a given query? I couldn't find a search field for this anywhere on the site albeit there is one for handles. The site is, however, searchable in Google, but it isn't nearly as convenient as a built-in solution would be. How about it?
P.S. A way to search for tags is to use the url http://codeforces.com/search?query=yourquery, where yourquery is the tag you're looking for.