Same here, except my mac is my macbook pro broadcasting my wifi network in my dorm room so I can use my ipod touch.
I'm a news junkie and recently bought Instapaper, it has changed
everything in the few days I've had it.
I even share my brother printer with my ipod, I printed off several articles for my Iran class from the comfort of my bed.
B is correct, but since SL wake on LAN makes it kind of a non-issue.
As for A, I'm pretty sure the hack just enables some setting in the OS that allows printer sharing. I just did a quick look of all my processes and there definitely isn't anything related to airprint running.
Edit:
http://netputing.com/airprintactivator/
That says that it just makes a single line code change in the CUPS configuration. That means, if I'm correct in my thought process, that your understanding of A is mistaken.
Hope that clears things up, cheers.