I mostly preferred to use portables even on my PC, not just on USB sticks. The idea of having the whole app including its settings and data contained in a singl

I mostly preferred to use portables even on my PC, not just on USB sticks. The idea of having the whole app including its settings and data contained in a single directory (on a dedicated partition, keeping the system registry clean and surviving full-format OS re-installations, also usable from multiple OSes) is very appealing. The selection of apps PortableApps.com offers also is amazing - I have found out many great apps and games just from there.