Nothing irks me more about Geocaching than getting a cut and paste log. We recently had a log entry that was an asterick - that was it. I have seen cache pages that said the owner would delete cut and paste logs, and seriously considered it myself, but a couple of things stopped me.
First, it would place me in the same category as the logger - i.e. jerky cacher. More than likely it would just start a flaming contest and the log would be ammended, but still wouldn't be appreciative.
Secondly, I tend to stay away from caches with a lot of 'rules' on the cache page. Just doesn't seem friendly.
I think the only way to fight it is to find one of their caches and do the same. In fact, simply logging "cut and paste" might do it
But on the bright side, it only takes one real good log entry to make up for a dozen bad ones. And a REALLY good log entry will get me motivated to hide more caches.
"Honey, we're not normal people. We're the Griswolds. "