There's a note making its way through the local newsgroups that claims to be from the Better Business Bureau, giving advice on how to avoid being scammed during the 2010 census. Rather than pass on a message whose provenance we aren't sure of (altho' it seems legit), we're referring you to this page on the official BBB website that tells you what to be wary of when someone claiming to be a census taker rings your doorbell.