A small but potentially mighty acquisition by Amazon (NSDQ: AMZN), which has picked up e-reader start-up Lexcycle and its popular iPhone application Stanza. No financial details were disclosed but Lexcycle founder Marc Prud’hommeaux tried to dispel the inevitable Kindle combo chatter by telling users in a forum that Stanza, one of the most downloaded iPhone apps, will continue to operate as a standalone.