Stuart Bruce wrote a comment about surveys in a piece some time ago on his blog. The upshot is that many surveys are rubbish justlike many statistics. To paraphrase Vic Reeves: 77.84% of statistics are made up on the spot. The same could be said for surveys by some cynics. But as Stuart points out, journalists complain but they have an insatiable appetite for them.
I have thought about this on three occassions when reading the Manchester Evening News. Each time I have seen at least two surveys feature if not more.
There is a problem though. If PRs supply so many then they will be an overused currency. Indeed, many surveys that the MEN covered just got a small column. If PRs want a quick hit they will have to be more creative or perhaps get back to the press releases.