This proves the point, that in the absence of other data and/or the flatness assumption, the WMAP data don't constrain things much. In particular, Crimson wonders whether Allan Sandage, who firmly believes the Hubble constant is in the 50s, will now advocate a slightly closed universe, which the WMAP data say yields a Hubble constant that he would like.

Two results from WMAP that do NOT depend on any assumption of flatness are:

(omega in baryons)h**2 = 0.0224
(omega)h**2 = 0.135

where omega is the total matter density (NOT including lambda) and h is the Hubble constant divided by 100 (e.g., h = 0.65 if the Hubble constant is 65).