"Twitter permalinks drop hashbangs #!" http://tantek.com/2012/150/t4/twitter-permalinks-drop-hashbangs-serve-content
・Twitter Engineering: Improving performance on twitter.com
permalink関連
・"article and post permalink pages: please put date near the top/header - helps to quickly understand temporal contexts. - Tantek"
・"frustrated by articles + blog posts found via web search lacking clear date published - no idea when news/advice out of date. - Tantek"