[Foundation-l] Donation Button Enhancement : Part 2

[Andrew Gray]

2009/7/21 Robert Rohde <rarohde at gmail.com>:

> Testing should be done in parallel, not in sequence.  History has
> demonstrated that donors have a tendency to respond disproportionately
> to "the new thing".  Which means that whatever button you test first
> will have an advantage over whichever one you test last.  Probably the
> easiest way to get a reasonable distribution is to vary which button
> people see based on their IP.

Or simply to randomise it entirely.

If either of those aren't possible for technical reasons, it might be
practical to rotate them - run each button for x many hours at a
stretch, rotating them so as to ensure they don't regularly go up at
the same time (of the day or of the week) and so that they get roughly
equal coverage.

-- 
- Andrew Gray
  andrew.gray at dunelm.org.uk