I like participating in the DT Assignments, it challenges you to do photography outside of your usual comfort zone and I think it's a great way to gain exposure because your accepted images become part of a unique collection.
In past assignments I had images that I thought were much stronger but would rank low in the final results. So it was a big surprise to have won the Spring Cleaning assignment. I was content to have an accepted image within the collection as I didn't think my image was much of a contender compared to many of the other entries. I did try to do something a little unique beyond generic cleaning but I will probably drive myself crazy trying to analyze the voting. :-)
Either way, I must thank the DT community for taking notice, I appreciate it very much. I guess it just goes to show, you should always keep trying because you never know what the overall consensus may be for a particular image you may not consider strong.
Like I said, I've always enjoyed being forced to do something beyond what I normally do so I've always felt like a winner for participating and having images selected.