BuddyPress.org

elegantjohn-

There are all sorts of strange CSS issues with your theme. You really should be using Firefox with the Firebug Add-on to help you debug your CSS problems.

As for the blockquote element within your blog posts, the width of this is set to 230 pixels in your CSS.

Also, deactivate all plugins, except BuddyPress, and see what affect that has on your layout. The geopress plugin seems to be causing some display issues.