Spring is for sure here and it brings also nice sunny days. For this reason we decide for
Tower theme combined with shadow tech.
In this option you should try to seek for high buildings and constructions. And to make the task more interesting, we challenge you to include shadow, or shoot just the shadow alone, in very similar way as we did on silhouette theme.
Shadows can add a lot to a photograph. They can emphasize emotions, create surreal images, and be used in a variety of ways. While strong use of shadows in color photographs tends to be mostly used in silhouettes, it can also appear in a variety of other forms in color photos as well. In my opinion though, shadows are most powerful when used in black and white photographs. (source:http://bit.ly/ax58i)
Very nice article about shadow photography you can find also
here.
For this theme is very hard to write tech article, i can give you just some examples, but don't forget for
towers 
:
http://bit.ly/1cqIQhttp://bit.ly/mwGCRPhttp://bit.ly/asV2CJRemember to use the theme tags like this:
Tower theme,shadow tech,ww/yyyy
Theme starts today, May 7th, and ends on May 20th. We would like to see at least one of your photos for this Theme, but bear in mind the limit of 10 photos per week.