We are or at least my wife and kids are instagramers. We have one under http://instagram.com/tassiecampers that pretty much has pics from any family holidays we do more so than any hiking trips we do!
I use Instagram as a promotional tool for a magazine for which I am the Marketing Manager. I've found it to be a very addictive if positive tool to engage with our readers - and just for the sake of it. Who doesn't love a photo? You can check outs our if you want: http://www.instagram.com/pipmagazineau