Writing on the Wall: Social Media - The First 2,000 Years

Recently finished this book by Tom Standage, author of An Edible History of Humanity. I would not have picked this book up if I'd realized who it was by, because Standage's unsavory politics in AEHH left a bad taste in my mouth, and I was unimpressed by his derivative style. However, this book was (mostly) free of political rhetoric, and I really enjoyed the discussion of "really old" media. I particularly enjoyed the descriptions of the graffiti at Pompeii and the Roman letter abbreviations like SVBEEV (si vales, bene est, ego valeo = If you are well, that is good; I'm well.) I would like to find a book dealing just with this period of social media.