This is just the faintest whiff of a rumor, but Sony Asia just put up a questionnaire in which it asks how interested PlayStation Store for PC customers would be in a "Monthly subscription plan (1 price for unlimited download)." That suggests that the company is at least thinking about a service that would let gamers play as many downloadable PS1 and PSP games as they want for a monthly fee -- although it's not at all clear if the service would be PSP-only or work on both the PSP and PS3, which would sweeten the deal considerably. Chalk this up as wishful thinking for now -- but those of you with PSN IDs may want to hit the read link and fill out the questionnaire.