A historic land rush is underway for vast new swaths of the Internet: Amazon has bid for control of all the Web addresses that end with “.book.” Google wants “.buy.” Allstate wants “.carinsurance.” But the single most aggressive bidder for lucrative new Web domains is a little-known investment group with an intriguing name: Donuts Inc. Its $57 million play for 307 new domains — more than Google, Amazon and Allstate combined — has prompted alarm among industry groups and Internet watchdogs. Read the full story at The Washington Post.