Would you be willing to answer a few brief questions about PlayStation Forums?
Till Uncharted 4 comes out.
Uncharted 2 is still lasting. So my bet is the above. when they pull the support totally.
I'd say when they close the servers. There will always be trophy hunters out there and people who like U3 (for some reason... ) so i don't see it completely dying off after U4 is out.
Well, it depends whether your disk is scratched. If you have a faulty disk that won't load, you need to add blueberry toothpaste to it and scrub down.