We certainly understand that the activities of gold spammers can negatively impact everyone's gameplay experience. Rest assured, though, that even if we don't explicitly call it out, we're actively investigating and actioning gold-spammers on a regular basis.
The best thing you can do about gold spammers both in-game and on the forums is to report them so that the proper teams can investigate those reports. Doing so allows us to hone in on problematic players so that we can take appropriate action against offending accounts.
re: the pro gold spammers
is it REALLY a problem that is going to be fixed by addressing it just within the scope of a player or account? no, it's more like .... IP bans and/or some kind of activity pattern matching to prevent these ppl from making accounts in the first place, or text pattern matching to prevent them from sending the spamful invites or chats in the first place.
how many legitimate invites are going to contain a URL, fgs?!
how many legitimate chats are going to contain a long phrase repeated 3-4 times, with one or more dollar signs, dashes, urls, etc.?!
think a little, IMO. try a little IMO.