Quick blog canonical URLs fix for reBOOT v4.7.3...
In skin/reboot/custom/reboot_service_head.tpl
Replace...
Code:
{if $homepage}
<link rel="canonical" href="{$current_location}" />
{else}
<link rel="canonical" href="{$current_location}/{$canonical_url}" />
{/if}
With...
Code:
{if $homepage}
<link rel="canonical" href="{$current_location}" />
{elseif $main eq "reboot_blog"}
<link rel="canonical" href="http://{$smarty.server.HTTP_HOST}{$smarty.server.REQUEST_URI}" />
{else}
<link rel="canonical" href="{$current_location}/{$canonical_url}" />
{/if}
Thanks to Paul for pointing it out.