Question for PSP Users!

[Severance]

Signalstar said:

You can transfer back and forth using your PS3 no need to download it again. Where exactly are you downloading it to, the PS3 again or directly onto the PSP with different memory cards? Regardless each time you download it it counts but transfers don't count as downloads to my knowledge.

i always download games on PS3 and transfer them to my PSP, i keep them on PS3 incase i deleted them.

i think transfers do count because it asks you to sign in to your account if you want to transfer...

but my question is, if i changed my memory stick , does that count as a whole new PSP ? or it knows that i just changed the memory card on the same PSP.