Mobile Guild Chat and Blizzard's Other New Gizmos

Larisa looks at the new features Blizzard has introduced in the last year or so, tries to decide which are hits (sparkle pony) and which are misses (in-game chat line and the mobile Auction House), and wonders which category the mobile guild chat capability will fall in.  She doesn't mention the mobile Armory, which I've wondered about.  Does anyone pay for this?
http://www.pinkpigtailinn.com/2010/09/mobile-guild-chat-success-or-portal.html

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