I'm looking to have my photos sync with Dropbox. I find that I never use iPhoto to actually view my pictures - it's slow, it's clunky, and I generally don't like it. Pretty much the only time I have the impulse to lazily browse through photos is on my phone, and I'd like to use my Dropbox account. So I would like to find an iPhoto alternative that will sync with Dropbox, perhaps organizing the photos into folders by year. Any such app?