Looks like Kumar from Yokayo Biofuels started a blog over at LiveJournal, excellent! I've added him to the blogroll at the right.
After a bit more browsing, it seems he came across this here blog almost three weeks ago, d'oh! Kumar's operation looks to be ~2 hours north of me (I'm in Woodside, California), I'll have to go up for a visit some time!
There's also tons of great stuff at the LiveJournal Biodiesel Community.