The script is not without warning – it will install a tonne of development packages which are in various states of stability. Marlin itself is not yet ready for mainstream use and should not be considered so.
As Jordi himself warns: -
“Do not try it if you’re not a developer, cause it still does almost nothing, you’ve been warned”
With all those warnings aside feel free to test it out and even muck in. You’ll find info needed on the Gloobus blog @ gloobus.wordpress.com/2010/11/17/marlin/