One of the problems mentioned by a couple people when I asked for suggestions on improving djangosnippets.org was the proliferation of tags. This is a well-known problem on sites that allow users to enter their own tags, where misspellings are frequent and its sometimes unclear whether a tag should be plural or singular.

To try and reduce the amount of different tags on djangosnippets I ended up using the jQuery UI autocomplete tools to provide users with hints when they enter tags for their snippets.