I use that:
<title>FireFox themes - Lynchknot</title><meta http-equiv="content-type" content="text/html; charset=iso-8859-1">
<meta name="description" content="Lynchknot's Mozilla Firefox/Firebird/Phoenix themes and skins">
<meta name="keywords" content="Mozilla Firefox themes, Mozilla Thunderbird themes, K-Meleon themes">
<meta name="author" content="Lynchknot">
I'm saying the "splash" page does not have much information content - perhaps google spiders view it as an insignificant site.