Omniglot is an intimidatingly complete site devoted to cataloging every writing system that ever existed. As JoshP says, "If you ever need to transliterate Punic... this is the place."
I write books. My latest is a YA science fiction novel called Homeland (it's the sequel to Little Brother). More books: Rapture of the Nerds (a novel, with Charlie Stross); With a Little Help (short stories); and The Great Big Beautiful Tomorrow (novella and nonfic). I speak all over the place and I tweet and tumble, too.