From one-person shops to giant enterprises, if businesses agree on anything right now it's " iPad Yay." The Apple tablet hasn't even reached the terrible twos yet , but it's clearly making its presence felt across countless verticals and different industries. For at least a couple of mobile professional writers (who might have been termed "ink-stained wretches" in times gone by), the iPad's capability as a writing tool has led it to largely replace their laptops for day-to-day work.