The purpose is two-fold: first, to make it possible for folks on mobiles to arrive and get to the two themes that are best suited for mobiles, the themes titled Mobile and Grokporate. Both should be better suited for small screens and I'm hoping for anyone using screen readers. Feedback welcome.
And second, we have a new one now for tired eyes, especially mine, called Woodnight, with a black background and cream text. We're still working on Grokporate and Woodnight, and Woodnight in particular still has really rough edges, but we wanted to go live so we can incorporate feedback.