SimplyMeasured-Interbrand100-Instagram-Adoption-May2013The number of Interbrand 100 brands with an Instagram account has grown to 67 as of May 1st, per a new study by Simply Measured, up from 59 on February 1st. While that’s not quite at the same adoption level as Pinterest (76) or Google+ (77), those brands using Instagram boast significantly larger audiences than those using Pinterest, per the report. Much of that has to do with levels of activity: while some top brands have “placeholder” accounts on Pinterest, the percentage of top brands’ Instagram accounts that have posted photos has grown by 10 points to 65.