Orchestra-conductors.com . You have to register to get a nickname and password to access this site, but once in, you'll find an encyclopedia with an extensive number of entries for various conductors. This is a relatively new site, and so one should make allowances for the odd omission: for instance, in the encyclopedia there's no sign of Samuel Samosud, but it has quite decent entries on, for instance, Albert Coates and Valery Gergiev. In addition there's a forums board (not very lively yet, so do go along and stir things up!), the beginnings of a links page, and a notice board for job-hunting conductors (US and Europe).