Change the "SharePoint" text in the top left corner.

http://zimmergren.net/technical/sp-2013-tip-change-the-sharepoint-text-in-the-top-left-corner

$webapp= Get-SPWebApplication http://SITE
$webapp.SuiteBarBrandingElementHtml = "

http://LINK"" style=""padding-left:0px"">TEXT

"
$webapp.Update()