My current android phone doesn't have a MIUI rom. The one thing I really miss about it is the Monitor app, which I had used to make sure that I never went over my lowly 150MB/month data limit. I tried taking the monitor.apk file and installing it in my current ROM, CM7, but it just says "Install failed," and does not give an error. I would be interested to know why this does not work. Is there a kernel module it needs that most other ROMs do not have? Something else entirely? Do the MIUI devs have any interest in releasing it as a stand-alone app? It is miles ahead of any of the other data monitoring apps on the market, and I would certainly pay for the ability to use it.