I noticed that recently, when viewing the questions for a tag, a tag description is displayed (taken from "info" wiki, for example http://stackoverflow.com/tags/perl/info for [perl] tag).
The problem is that this description is displayed as a non-formatted text content of the info wiki, which for some tags makes it fairly unreadable AND too long - as an example of Perl one, this is the text that is displayed, as-is, at the beginning of http://stackoverflow.com/questions/tagged/perl :
Perl is a high-level, general-purpose, interpreted, dynamic programming language. Perl was originally developed by Larry Wall in 1987 as a general-purpose Unix scripting language to make report processing easier. ( copied from Wikipedia ) Latest stable release: 5.12.1 Latest development releases: 5.13.* Related tags: cpan The Comprehensive Perl Archive Network dbi Database-independent interface for Perl mod-perl Integrate Perl and the Apache web ...
My proposal would be to have a special text-only "short description"/"executive summary" for each tag - possibly stored in the tag's info wiki as a special section - which would be used in the tag description instead of a full text content of the entire wiki.