The Cyclic Redundant Check is non-cryptographic error-detecting code commonly used to detect accidental changes to raw data.
Given that even the tag wiki describes CRC as "non-cryptographic", the question arises whether any of these questions are really on-topic here, and (even if some of them are) whether we really should have a tag for something that seems to be explicitly off-topic here.
Now, granted, I can certainly imagine CRCs appearing as a part of a cryptosystem, or otherwise being tangentially mentioned in a valid, on-topic question. But, even though error-checking codes certainly are a pretty close topic to crypto, and even though some of the past CRC questions have received good answers here, I don't really see how a question primarily about CRCs could be on-topic here. Unless, of course, we just decide that they are — after all, the scope of the site is ultimately up to the community.
Given all that, I'd like to ask the community's opinion on the following issues:
Should most of the questions currently tagged with crc be closed as off-topic (and what are the exceptions, if any)?
If the answer to the previous question is "yes", what should we do with the tag itself? Should we remove it, to keep it from attracting further off-topic questions, or should we leave it in place and just add a warning that "questions primarily about CRCs may be off-topic here"? Or something else?