I am not sure anyone cares about Felton like they do LA, but even Bonzi and Crawford's teammates took pleasure in trying to shut the fans up. And it's not just Portland players that can be used as examples. Think back when Jazz fans booed Fisher......
Another article on how how aldridge's meetings went with the Lakers and knicks as well as the rumors between him and fame and the minutes he will get in San Antonio http://www.basketballinsiders.com/nba-am-aldridge-details-his-free-agency-process/
If a large percentage of fans throw marshmallows then they won't be able to throw everyone out. One fan, or a handful of fans, would get tossed, but they can't toss hundreds or thousands of fans. Give everyone ONE marshmallow and have everyone throw at the same time. Fun for the fans is good business!