What is advertising likely to mean to the Instagram customer experience

It was announced this week that Instagram (www.instagram.com) would be introducing advertising to the uk site ( http://mashable.com/2014/06/09/instagram-international-ads/ ). Instagram is currently a beautiful site of imagery and video content allowing the sharing and distribution of this content in a social media environment. Following acquisition by Facebook in 2012 it was expected this monetisation of the site with adverts would take place much sooner. But what does this mean odd the experience?  The site is built really for consumption via mobile devices meaning opening it up for adverts is not as straight forward as Facebook where the desktop site can pull in most advertising revenue as a side panel to the core content. So will Instagram adopt a sticky header or footer with advertising space reducing the available window for displaying the amazing photos shared by corporations and individuals alike?  Adverts are a sensible and inevitable step and if you are reading this from a mobile the blogger site overlays this with some adverts but I hope Instagram think this through and come up with a fresh approach to presenting advert content that compliments the visual nature of the site. Keep it epic and consider the core site objectives when adding adverts.