I've been using Pensieve for a while now and recommend it to most of my friends and colleagues. Hooking into the share tray has made it easy for me to remind myself of articles I want to read at a later time, or send myself a photo of something when I'm on-the-go and need to reference it later.
I use it for work and leisure equally and have two different email addresses based one which one it pertains to. There are a ton of other bells and whistles that allow users to customize the app based on their needs, but the simple, straight-forward functionality makes Pensieve my personal assistant whom I depend on on a daily basis.
I love it.
