In reply to my answer to this question, three different users noted issues with part of my solution and an excellent alternative. I edited the answer to reflect that information, and wanted to comment to notify those users of that fact.
Because I could only notify one other person per-comment, I used a hackish solution that prompts this question. I posted three comments; one to each user, each with a very short message that would show up in their inbox. I then immediately deleted the comments, so as not to leave the 'noise'.
I guess this is sort of a multi-part question:
Comment 'reply' notifications do not get removed from a user's Global Inbox when the comment itself is deleted.(EDIT: This has been proven to be incorrect) However, does deleting the comment almost immediately after posting defeat this by causing an Inbox notice never to be sent? I have no intention of leaving such comments beyond a few seconds, so if this doesn't "work" as I have done it, I won't do it at all any longer.
- Am I potentially creating noise for Moderators by doing this? Since I am deleting the comments immediately, I wouldn't expect it to cause trouble with the view of posts with high comment count (and wouldn't do this on a post I think is likely to be comment-hell, anyway)... but am I wrong in thinking deleted comments don't count toward the 20? Or does self-deletion of a handful of comments cause any Moderator notifications/extra entries?
- Is there some other reason it's not desirable to be exploiting the comment reply notification system in this way?
Basically, it's such a small thing that I've only done a handful of times, and I'm only posting this question at all because by the time it occurred to me what a tiny thing it is, I'd already put too much effort into the question to abandon it. If it causes any noise (or any other trouble), I'll gladly stop!