To add a new link just do this
Open app/design/frontend/default/TEMPLATE/layout/customer.xml
Add the following at the bottom before closing tag.
<default> <reference name="top.links"> <action method="addLink" translate="label title"> <label>Blog</label> <url>YOUR-BLOG-URL</url> <title>Bloh</title> <prepare/> <urlParams/> <position>2</position> <liParams /> <aParams><![CDATA[target="_blank"]]></aParams> </action> </reference> </default>
Just replace URL with your blog url
<customer_logged_out> <reference name="top.links"> <action method="removeLinkByUrl"> <url helper="customer/getRegisterUrl" /> </action> </reference> </customer_logged_out>