<font face="Verdana, Arial, Helvetica, sans-serif" size="2">Originally posted by cordelli:
The airlines don't like it, but if you do it on different airlines, doubtful they will catch you.</font>
Doubtful? I don't get it...if you do it on separate airlines, you haven't violated anyone's terms of service, so there is nothing to "catch". (I think we're all talking about nested tickets or maybe back-to-back tickets. I have never heard the term "ticket stacking".)