[GilbertZ]

Probably the fastest and most effective way to do it is to make an extra posting field similar to the description hack. But instead of doing it their way, search for every instance of how they implement "title" of posts and do almost the same thing for tags. Including the Word table, which has an "intitle" feature. You add a field to the word table called "intags". Then tags can be searched the same way as titles. Then you'll need to hack up search.php quite a bit.