Have you tried Instagram yet? I have an account and love the fact that I can post a quick picture on there and share it with others. Or maybe it's because I can edit my photos and feel like a professional photographer. Seriously, it's just so easy to document little snippets of life plus I can use the pictures in my digital scrapbook layouts (insert happiness here).
If you want to see what has been going on in my life, check out my Instagram page here.
I also have InstaPlace and InstaWeather which are great for documenting life. What apps do you use for documenting life?