Time for a little pet peeve. I’ve gotten numerous emails that say something like, “In your last blog…” when what they mean is, “In your last blog entry…”
A blog is a collection of entries (or posts). The set of possible entries is only countably infinite, but the set of possible blogs has the cardinality of the continuum.
(In practice, the positivity of the cosmological constant does impose an upper bound of about 210^122 on the number of possible blogs. But that’s merely a contingent fact about our universe, and is not intrinsic to the notion of blog. Logically, there’s no reason for a blog ever to end — even though any particular entry, including this one, must.)