How to manage placement of blog articles in omega regions
All content ends up in the Content region.  If you need something different, then I think g you have two options.

One, you can try to use a process function to move the content to a different region withing the zone.  The function would be function mytheme_alpha_process_zone (&amp;$variables) and you would place it in "process/process-zone.inc".  I have no idea if this would actually work, but it is worth a shot.

Two, you could use one of the various techniques for changing layout based on content type.  Personally, I am a fan of Panels, but you could also try Delta (which plays nicely with Omega).