RepRap is still growing. It's crazy how many new people buy reprap kits each day, and you can only imagine how many more printers they are making for their friends daily as well. It's a movement, one that will have its ups and down, but in the end the open source aspect of RepRap will help 3D printers evolve. That is as long as companies don't come along and try and close off the open source by filing for patents and whatnot.