It's just an example of how console-only gamers are more easily exploited than PC gamers or hybrids. Costumes and additional levels are things people make on their own in the PC world for free and you patch it, it's done. It is a little crazy what can go on in consoles.

It all depends. The MGS expansion for Little Big Planet Vivi22 brought up was definitely worth it and I'm glad I bought it. Also got Pixel Junk Monsters Encore, except it's so damn challenging it's like I'm not able to access the levels I paid for!!! ...bad joke. I also typically got the Metal Gear Online expansions because they introduced and facilitated weekly tournaments that really got an active community, some of my best PSN friends were met there.