Yes, that headline made me do a double-take, too, but Richard Dale's blog post on KDE, Qt and Mono Visual Basic is indeed referring to coding under Linux. My question is, however, would anyone really want to do this?
Anyone who is interested in writing macros for OpenOffice, or extending some of its functionality, will probably be interested in this series from Linux.com, on OpenOffice Basic. This particular article covers accessing the OpenOffice Base database backend.