Unless the owner of Masterrussian and the academy came to a special agreement, I would regard that ad as spam. I think so, because Masterrussian was not the only website on which they placed their ads. Yes, I did visit their web-site as they offered and never found any links to Masterrussian or whichsoever other. I just wonder, if they like to leave their links on every web-site dedicated to languages, why don't they place those websites' links on their own site then?