I recently flagged a few comments that provided a link to what was ostensibly a helpful resource, but had since become dead links linking to nothing in particular. The comments did not provide any information that was helpful without the resource. They were along the lines of (but not identical to):
This reminds me of this cool thing.
I figured since the links were dead the comments were useless, so I flagged them as no longer needed.
However my flags were all declined. I was wondering what the rationale was behind keeping these comments that seem to me to be useless.
Here is one of the comments I flagged for reference.