Don't ya know? Tilts make photos "artistic". Hehe. I was copied into an e-mail a few days ago by a MOB who was looking at photography websites and was totally baffled by the "every damn photo is tilted" deal. The MOB was asking a floral vendor why so many photographers were doing it. The MOB thought it was stupid.
However, as someone who sometimes crops in wild ways, and tilts on occasion, I can say, that when applied correctly, tilting can imply movement, or enhance it. It can also give a more photojournalistic eye WHEN USED PROPERLY.
Just like with everything in photography, a little goes a long way. It's not going to be "unique" or "artful" or "photojournalistic" if every shot is the same. I know of a photographer where on her website, every dang photo has a sunburst. It looks cool at first, but after the 10th of 200 photos in the same vein, the effect goes away, and the viewer is left with, "really? is that all you can do?"