Instagram, which has picked up over 27M users and a $500M valuation thanks to a popular iPhone...

|By:, SA News Editor

Instagram, which has picked up over 27M users and a $500M valuation thanks to a popular iPhone photo sharing/editing app, finally rolled out an Android app today, and already says it's signing up users at a rate of 2,000/minute. H-P's (HPQ) printing division might not be pleased to hear that number. Nor may web printing services firm Shutterfly (SFLY), in spite of its efforts to diversify into online photo sharing.