[buster]

Well... http://www.techrepublic.com/blog/opensource/rip-compiz/3402

Sooo, all others move away from compiz (which is poorly maintained anyway).

[slurgfest]

Although Compiz is very, very customizable and hasn't changed all that much in years, so one would think it would appeal to all the people who are screaming about losing customizability and having everything change underneath them.