Here's something that is going on in Japan:
LEGO Cuusoo is a site that has been around for a bit, but only recently got translated to English. You can read the FAQ here.
In some ways, it looks like LEGO Design byME. You can create your own set. However, there is a big difference - LC allows for the opportunity to make production runs of selected sets. The LEGO Group is an official partner in this, also.
The site is in open beta, so there are bugs, and the error messages are in Japanese, so have Google translate handy. Registration takes a few moments to do, but it allows you to vote and create wishes.
However, the idea is pretty cool - make a wish, get 1000 supporters, and your wish gets considered for a production run!