I've had relatively little to do with Vim scripts despite using Vim for a few years. However, I recently read a recommendation for allml.vim and visited its page at http://www.vim.org/scripts/script.php?script_id=1896 . On reading this page, it wasn't clear to me what the karma score (which was then 59/20) meant. In order to understand it, I had to google "vim karma" to find vim.org's page - http://www.vim.org/karma.php - explaining the karma rating.
A simple but effective UI improvement for vim.org would therefore be to turn the text "script karma" on pages such as http://www.vim.org/scripts/script.php?script_id=1896 into a hyperlink pointing to http://www.vim.org/karma.php . This would spare newbies like me the need to google for the answer.