I’ve now got a small stream of revenue coming in, and if I didn’t know some calculus, I could prove that it is sufficient for all my needs:
I received some money yesterday.  It will take me a finite non-zero amount of time to spend it.  By the time I have spent it, some more money [...]

Google has taken steps to address the privacy concerns over their Latitude service, and most people seem to be satisfied.  One thing I’m slightly surprised about is that no one seems to be particularly suspicious of what their statement
Google stores only the most recent automatic update or location selection you manually entered on our servers.
does [...]

That brings my total travel to date to over 42 billion km.