The 'spam' link can probably be edited out of this answer without losing any value. But 5 out that user's 6 answers all link to that (or similar) YouTube sites (and the one that doesn't, still mentions it). Is a "warning comment" sufficient, here, or is it real spam?
... the more I dwell on this, the more I'm inclined to go flag them (well, 5 of them, at least).
@tripleee That pattern looks like it's already caught by Potentially bad keyword in body and Potentially bad keyword in answer Append -force to the command word(s) if you really want to add the pattern you provided.
@Jesse Unless it's really egregious (or actually inappropriate content), most moderators on SO will decline red flags on those. As far as I'm aware, the only moderator who is likely to mark red flags helpful on minor or moderate amounts of such additional characters is Cody Gray. Yes, it is abusing the system to get around a limitation, but applying the red flag penalties is generally considered too harsh for the vast majority of such offenses.
@Jesse When a single red flag is marked as helpful, there's actually no penalty applied. But, if the flag which is marked "helpful" is an R/A flag, then the post will be prevented from becoming an audit. If there's a "helpful" red flag on the post, then the post content is hidden in the question view from non-moderators.
An automatic downvote is applied to the post when each red flag is raised. That downvote is removed if the flag is marked "declined" (post score is auto-recalculated sometime in the next 12 or 24 hours) or "disputed" (post score is immediately recalculated).
If the post accumulates 6 active (i.e. unhandled) red flags (i.e. red flags which are not already marked "helpful", "declined", or "disputed"), then the post is deleted and locked by the Community user; a -100 reputation penalty is applied to the author of the post; the post author's primary IP address is hobbled or blocked by SpamRam; and all of the active red flags are marked as helpful (all non-"in need of moderator intervention" flags are also marked helpful when the post is deleted).
A moderator's red flag will count for any number of red flags up to 6. In other words, the moderator's red flag immediately causes the actions which are triggered with 6 active red flags from regular users, regardless of if there are any other flags already raised on the post or the state of those flags.
[sigh I probably should have just pointed you to the MSE post to which @JeffSchaller pointed you.]
@Jesse A normalized version, {{'18449194592', '8449194592'}}, of that pattern is already on the number blacklist. You can use !!/bisect-number +1 (844) 9194592 to determine which entries on the number lists match that pattern, which would tell you: Matched by 844-919-4592 on line 719 of blacklisted_numbers.txt: 18449194592 found normalized; 8449194592 found normalized
