More about Nothing isn't really a concept album. It's more like he's a fan of Seinfeld, like I am, and finds nice little sound bites to incorporate into his songs and lyrics. The names of the songs can be considered a part of the 'concept' but I think it ends there. Look at The Soup for example, in that episode there was a new soup shop with this chef aka the 'Soup Nazi' that served amazing soup. The only thing was you had to follow really strict rules and be of his liking to get the soup. That song isn't exactly about that or has anything to do with it. He just found a creative way to spin off that and put it in the song.
I listen to Cudi, not much recently, but I still listen. Man On The moon was definitely a highlight in hip hop music last year and I played it to death. I actually don't even have it uploaded on this computer, or any of his other songs.
As for that Lupe Fiasco snippet, I love Lupe, but I'm trying to lay off leaks and snippets until I get a album