Fake labels

I personally don't have problem with this kind of "labels". I did something similar at http://musicbrainz.org/label/aefc3abd-1 … f4229.html [I'm sure somebody who disagrees with this will show up soon :)]

Though I'd very much prefer if we don't make up catalog numbers like Discogs.

Well, I don't think most of the Q-mag releases have a real cat numbers, for example. I've seen some other CDs from magazines which have catalog numbers on discogs that are actually only issue numbers/dates of the magazine.

it depends what you define as cat#. in my experience at discogs it is the number written on the CD matrix/vinyl run-out groove that gets used if there's no 'obvious' cat# (ie on the spine or rear sleeve).

i've never seen them being 'made up' - there's a "none" standard cat# to be used in the absence of a real cat#.

fair enough :) thankfully that stuff must be pretty isolated (probably only magazine type CDs).

though also you sometimes you get cat#s that aren't on the CD, but do actually exist - eg, ones on the labels website. those IMO should be entered as usual.

PS those Q magazine cat#s at http://www.discogs.com/label/Q+Magazine aren't made up - I have one of them and the cat# matches.

another thing i should mention - the release dates for such magazines don't always follow with the issue month. eg, the march edition of Q would most likely come out in february, so best not to assume them.

Musicbrainz has SpecialPurposeArtists for works by various artists, no artist etcetera. Maybe a "special purpose label" could be made for self-released releases (also in the light of this discussion)?