Many hands make light work!
I think that "old, bad data" plagues every database in every industry. We were helping some auto parts company standardize its labeling (with ink jet printers and bar code label-printers).
Some of their people were proud, and others were ashamed, that they had "tens of thousands" of labels in their database. Something like 80% of them were junk, or obsolete, or one person's quirky preference, or just plain lost because someone else had a number system that no one else ever learned.
Anyway, it took months to prune away the junk, and some people resisted deleting even things they KNEW were not being used "because some day we might want them".
"Lots of data" is nice, but "some GOOD data" is better.
I don't know how many vendors we have in the Green Pages - several thousand? And only a half-dozen or so had bad links! Darn clean database. Most of the "funny" ones I saw had a link that changed, typically a Facebook link that changed, or went out of business.
