First it was lomo, then cross-processing, and now the latest craze among online photographers seems to be making their photos look like miniture models.
A common side-effect of macro photography is a shallow depth of field (DOF) which means that only a small portion of the scene is in focus. Luckily this effect is very easy to emulate and here’s a tutorial to show you how. Pay attention to Christopher’s advise about what sort of shots work well! You could also buy a Len Baby which does a similar job and more!
Daily Dose of Imagery has a very good example of the “fake model” photo. He blurred the foreground and background, but some middle distance objects are in focus and intersect the blurred area. Nicely done.
Even after an effect becomes stale and overused online, there’s always the print world. People seem to like that sort of stuff all the time!