Here's a tip for improved source code ordering in '2 column - left' layouts...
skin/reboot/custom/home_2_cols_left.tpl
Replace...
Code:
<div class="row-fluid">
<div class="span3">
{include file="customer/bar.tpl"}
</div>
<div class="span9">
{include file="customer/content.tpl"}
</div>
</div>
With...
Code:
<div class="row-fluid">
<div class="span9 pull-right">
{include file="customer/content.tpl"}
</div>
<div class="span3 pull-left" style="margin:0">
{include file="customer/bar.tpl"}
</div>
</div>
This ensures that important content is displayed first in mobiles/tablets and generally better for SEO.