There are a bunch of interesting utilities that are either experts or OMB scripts that are hosted on SourceForge by some keen OWB users (see the home here). One of the main initiatives has been an Excel to OWB ‘one click ETL’ utility, which looks to have had a fair amount of code added, there is an example but its kinda light on documentation, but does look like it covers quite a lot. One of the nice things about SourceForge is that you can peek into the statistics and see what kind of activity has gone on, from last August there have been a bunch of downloads with a big peak last November…

Another utility that is there is one to generate OMB from a mapping definition, a bunch of useful stuff there - http://sourceforge.net/projects/owbland/files/