Profiteering from a website now that someone has passed away is no sicker than the record labels profiteering from exceedingly high levels of sales of his albums.
I see nothing wrong with what people are doing, even for the wrong reasons. It's still going to increase worldwide exposure and serve the fans a venue for them to remember MJ and appreciate him.
(I'm not flaming or anything, just shedding a personal opinion on the subject, I'm definitley open for discussion, just not the typical TF type of rude and obligatory rude discussion)