I love taking photos with my iPhone. I've played around with a lot of the apps mentioned in that article.
However, I'm wondering how much of this is a passing fad. Specifically I'm referring to the whole Hipstamatic/Instagram look (you know... that fake retro look with off colors and film scratches). I've seen Hipstamatic photo galleries on the NY Times, NPR and a lot of other mainstream news outlets. In it a away it already seems dated.
That being said, the best camera is one you have with you. So snap away...