The Mislabels section at LiveNIRVANA.com currently comprises of two sections.
The Mislabeled Dates page deals with incorrectly labeled bootlegs, i.e. concerts which have been circulating with the wrong date, venue, or other incorrect information. This page gives the correct details of the recordings, gives further information, and also states whether a concert was in fact played or a recording even exists on the mislabeled date.
The Generational Mislabels page deals with the numerous CDRs circulating with incorrect generations, that is, false information about the provenance of the recording.
There are also many mistakes on official products (Geffen releases), but these are thoroughly dealt with in The LiveNIRVANA Companion to Official Releases.