I bought it the day it was released. I opened it up, played with it for awhile, got the basics down. I even moved it into the Dock area of my iPhone to help encourage adoption.
But, from that day until today, it sat there. I'd open it once in awhile, but only to ponder it and imagine what I could do with it and, more importantly, whether it would speed up the performance of common tasks on my device. Then I'd close it.
This has been my experience too. I'm trying to make a go of it, I just have to change how I use the iPhone a bit. That said, it truly is a great app.