http://cssiseasy.com/2009/06/07/tutorial-1-inline-form-with-blueprint/
If you add the following to tutorial #1, the layout goes haywire:
<div class="column span-4">
Nothing here:
</div>
<div class="column span-20 last">
</div>
If there is a non-breaking space in the right div, then it's ok.
<div class="column span-20 last">
</div>
But I know there's got to be a css solution rather than putting a non-
breaking space in the source page.