So yardsnacker asked me to elaborate on the benefits of green powders. Here's my best shot at it.
Based on what I've read and experienced, I believe that greens are some of the most nutritious foods we can consume. However, it can be difficult to eat enough fresh greens or to get a truly wide variety of them through salads, green smoothies and green juices. That's where low-temp dried greens come in. The green powder I use includes grasses, herbs and green vegetables that I wouldn't otherwise get to enjoy the benefits of, like bilberry leaf, white willow bark, aloe leaf and strawberry leaf. These are all mixed together in a concentrated form.
Some people, like Raw Model, Anthony, make their own blends, by ordering various herbs and even dehydrating their own greens. I'm always threatening to do this, but haven't gotten around to it yet. Once I use up my couple of jars of pre-made green powder, I may just give it a shot. Kristen happened to post today about the green powder she likes. See #6 on her list.
I still make and love green juices and smoothies, and huge salads, but this is a way to easily up my intake of green nutrition, while also getting in some herbs and superfoods. When I would up my percentage of Raw and neglect green powder blends, I'd usually find I had more transition symptoms: breakouts, canker sores, tiredness, or cravings. Sometimes I just mix the powder with water--not the best taste, but not bad. (I'm past the point of consuming things I don't enjoy, unless they're for medicinal purposes.) I like it better in smoothies though.
Hope this brings some clarity.