I just started out (again) on Instagram. It's always been the one social networking service that I've really enjoyed, and in the end I gave in. I think it's a quick and easy way to get a peek into your friends and family's days and to share your own days. Being on Instagram helps me keep my iPhoneography momentum going. I tend to look through my photo roll more often when I post to Instagram, instead of photos simply being swallowed by the digital realms - and never viewed. That way I can see the trends, what's going on in my life and what am I paying attention to. Are all my images similar or is there a lot of variation? It helps me develop creatively too.
You'll find Marmalade Moon on Instagram at marmalademoonstudio.