Can I just suggest, as it appears they usually visit to spam and leave, probably on borrowed accounts;
Maybe servers with Insim or program like Airio, lfslapper or other, perhaps server owners and team managers can add the phrase "lfspro,net" to a blacklist Bad Language? So the user gets kicked/banned (whichever).
Better still if the entire first (in the case of the first report where user spam several phrases before reaching the word lfspro) Brazilian phrase can be added to blacklist, so when first phrase gets spammed he gets banned immediately before he can spam the following sentence with "lfspro" link to it.
Just two ideas. Of course report will have to be made for Scawen to remove the user totally, bur at least instaban will definitely discourage those people from promoting the server