I apologize for not posting earlier in the week. I have been catching up from last weekend's shoots. While listening to pro photo show's podcast, Gavin interviewed Trey Ratcliff. He is known for his amazing HDR work. [High Dynamic Range].
Take the time to check out Trey's work. Even if you are not interested in producing HDR, you will see he has a tremendous amount of information to share concerning images. To give you any indication how good his work really is - his images have over 16 million views. Yup, I would say they are very popular. :-)