Puzzle Lovers Club
... that the Puzzle Lovers Club served as a testbed for hundreds of direct marketing techniques?
... that the <b id="mwATU"><a href="./Puzzle_Lovers_Club" id="mwATY" rel="mw:WikiLink" title="Puzzle Lovers Club">Puzzle Lovers Club</a></b> served as a testbed for hundreds of <a href="./Direct_marketing" id="mwATc" rel="mw:WikiLink" title="Direct marketing">direct marketing</a> techniques?