For this month ste-phan chose speed.

"Speed : use your smartphone and creativity to capture the sense of speed.
Fast or slow - the movement needs to be clearly shown, not imagined like in a picture of a static airplane or race car."

I think that does it.

The rules:

Photos must be taken during this month.
Photos must be taken by the posting member.
Photos must be taken with a camera phone.
Users must name the phone used to shoot the picture.
Users must add a link to the original photo with EXIF.
Users can change the entry only once.
Last three days of this month are for voting.

Now would be a perfect time for perfect shots!