When that option is enabled, audio will not continue to play in the background.

Oh. That's... very annoying.

even in safari on iOS 5, i can't get it to play the next track after the lock screen timer kicks in while something is playing.

Alternatively you can go to Google+, right-click the search bar and select "Add As Search Engine..." You can then change the keyword to "+" or "plus", and do the same thing.

That won't live update with results as you type though. Search+ pulls in recent results from Plus and lists them in the drop down. If you select a result it will open that post directly instead of going to Google+ and showing results.

You can define a category within your implementation file (.m) and redeclare the property like this:

@interface MyClass (PrivateMethods)

@property(readwrite, retain) NSObject *myProperty;

@end

@implementation MyClass ...

Now only your implementation knows about the generated setter methods, and you don't have to implement them yourself.