There's just to many building block systems now...and all that anybody wants is LEGO.
Except the Joe collectors, they seem to like that GI Joe Kreo stuff.
Which sorta reminds me. I've been seeing a lot of bootleg LEGO mini figures on eBay. Saw some Lord of the Rings sets for like $8 and they look exactly like the LEGO versions.
My wife even found some LEGO Minecraft knockoffs on some "deal" site. She ordered a set of 6 for $8 and when we bought a legitimate LEGO Minecraft set, I compared the minifigs. Almost exactly the same in build and quality, just the decos were off a little bit, and instead of the skeleton being an actual skeleton, it was just a minifig body with a ribcage printed on it. And instead of the Enderman being a tall drink of water like the LEGO version, it too was simply a minifig with regular legs. I'm sure the Chinese are simply pirating the LEGO molds.