Finally, no longer staring with futility at electronic text, wishing you could tell that book what you really felt. No more sleepless nights unable to remember that one sentence of Twilight that really pissed you off. Google has once again liberated the masses, offered the ability electronically that any asshole with a pen could do with a normal book. Halelujah, we are saved.
Also, the Apple version of the app has not been updated with these features, so they can suck it. If you are reading this on an iPhone/iPad, I of course do not mean you.
Google updates Android books app to match rivals - CNET (blog)