There is a particular user who has just started what appears to be an advertising campaign for a specific user group/community/whatever.
This user's modus operandi seems to involve appending a standard "Join this group for more amazing tricks" to all of his/her answers. I have removed a couple of those, but I am starting to think that a more concrete response may be necessary...
I suppose that bringing this up in Meta will probably attract the right kind of attention, but, for future reference, what should one do in such cases? Should they:
flag as spam, even if the answer contains otherwise relevant and potentially useful information?
flag for moderator attention?
edit the spammy content out and leave a comment?
just edit the spammy content out and go on with their day?
PS: It should be noted that this user has made no contribution to SO since registering over a year ago, until this spam campaign started a few hours ago...