i am thinking of jailbreaking my ipod touch 3rd gen 3.1.3. with spirit. but one thing i am concerned is with memory, i only have 3 gb left out of 7gb. I dont think that is enough space for apps and even if it is, I want to install more games and i dont want to remove the apps i have since i paid for them. how much space does cydia take up? with like 10 themes and [unicorn dust] also, dont it to slow down my ipod touch..