I actually like 2nd-person POV. It can be very good when done right, particularly if you want to surprise or create mysteries.
That said, it's much harder than the standard 3rd-person / random-omniscience that's taken over fiction writing, because any breaks from the POV stand out more and authors have to pay attention to POV. It's not like 3rd-person where authors can stick in omniscience whenever it's convenient / they forget what POV they were using.
OT: Sloppiness bothers me. Switching POVs (particularly sudden random omniscience) annoys me a lot. So does bad characterization or sudden plot changes. Same thing goes for grammar or spelling - I'm fine with a few issues, but if there's too many they get distracting and I lose interest. If the writing, story or characters aren't important enough for the author to pay attention, I don't really want to waste my time paying attention.
Also, I'll put a book down or edit the book (Sigil is awesome! As is whiteout) if I run into a sex scene. If I was interested in that, I wouldn't be reading.
