We're receiving a lot of spam that looks like this:
Form field 1 (textfields): duYYAJPNaMVsC
Form field 2: icDiQOVRy
Form field 3: uSDzPEObWIrTsCidma
Form field 4: ODscxPiiqj
Form field 2: (textarea) 6YWx4t yykqtykkniwr, [url=http://nvuozttudquw.com/]nvuozttudquw[/url], [link=http://xnwfrkyueend.com/]xnwfrkyueend[/link], http://efuwqygexlaj.com/
What kind of spam is this and what purpose does it have? The links doesn't work and it's not advertisement.