There are multiple options for how to have them sorted on PSN, just not sorted.

I have 30 games too Nikkom, and have never had any issue finding which I want to play when it is sorted by game category in a folder (which I don't even remember how I made now, because I wish I could make more).

I probably have something like 50 PSN games and I have no trouble finding them.

Press Triangle on a game, then go to Information and there should be an option to input a folder name. I go by genre, so it makes it a little easier to find the games. Once you have the folders all named to your liking, just press Square when you're on the games category of your XMB to sort them to where the folders show up.

This.

I have all PSN+ stuff... over 100 PSN games and never have any trouble too.

You can change the folder group with SQUARE... there are four or five kind of group... you can put a folder name to the games to make your own groups too.

Well, in all fairness, I would have probably 60 or 70 games, but I delete off any games I beat and any I simply don't like just for simplicity (30 is easier to go through than 60 or 70). If I ever wish to play again, I just go download it again.

Link does not work for me :(

Link does not work for me :(

Yep thats lacking in the xmb also I would to be able to know information about content like who user bought which game.

I do believe it says that under the Information option when you click Triangle on a game.

Yay? This will be so useful for me! All I have to do now is get some custom firmware!
/s

Hmm, thought I was the only one.