As digital books continue to gain market share, Dorchester Publishing is abandoning its traditional print books and making its titles available in digital format and print-on-demand only:

http://online.wsj.com/article/SB10001424052748703309704575413611289773690.html

The trick is to just keep writing and watching the landscape for the best venue to publish. The best is to have a celebrity read your work. Then nothing else matters.

The article is about Dorchester Publishing reducing print runs and switching to POD and ebooks:

"As digital books continue to gain market share, one of the country's
oldest mass paperback publishers is abandoning its traditional print
books and making its titles available in digital format and
print-on-demand only."

They subsequently backtracked on that statement a little...

...but there will still be no more mass market paperbacks for retail distribution:

http://juno-books.com/blog/?p=1039