Image: Josh Liba @ Flickr.com
User
Storage
Image: Bob Segal @ Flickr
TODO: prepare better image for explaination
TODO: add image with subscriber/sender example - subscribe for message and send message
Image: Shane Casey @ Flickr
Image: Martin LaBar @ Flickr
TODO: image with comparison to bees and flowers (bees are inteligent messagers, delivers content when it's ready)
TODO: PHP CLIENT EXAMPLE, maybe real working example?