HiPlease add yourself to [0] if you're actively working on mips or mipsel. Feel free to complete the page for the other criteria as well...
Due to toolchain issues and most visibly the build issues with xulrunner, the Release Team will consider dropping mips and mipsel for testing migration consideration unless there soon will be clear progress on the issues...
Cheers Luk [0] http://wiki.debian.org/mipsLennyReleaseRecertification