Yes – exactly what I need as well. The same tags with which one marks posts should be usable on blogroll links as well. Gives a similar functionality as the tagging networks (digg, etc), but within your site.
In order to keep categories to a minimum, but still allow users access to the ‘tag’ folksonomy that is more open, the ability to tag blogroll links would be ideal. Thus, a link could be assigned to an overall category, yet also be related to other links AND posts via tags.
Not that I have the technical expertise to do so, but given the ‘comments’ field on the blogroll link form now, it should not be difficult to add a ‘tag’ field matching the ‘tag’ field on posts. Would provide great functionality.
Does anyone know if the taxonomy group is working on or looking at something like this?