A few days back I wrote a guest article at the digital Photography School called “photophlow: A Social Experience for Flickr Photographers“. If you aren't a regular reader of the dPS, head over and check it out.
Also, I wrote the article as my own project entry for the Social Photography Project that's still running. If you're planning on participating, now is a good time to get it done. I've only had four project entries, so there's still plenty of room at the top of the list! The project deadline is February 22.