Allow for only showing tags that have a minimum number of nodes

I would like to be able to not show terms unless they match at least 2 nodes. It would be better still if I could select the minimum threshhold to show the tags at.

I am using the tag cloud to display tags added by users. Sometimes they add useless or spammy tags so I would like to only show terms if they have at least 2 matches. For example, a user will add tags that are too long or they will add too many tags or they will add misspelled tags.