Which is a relief. 2 successful donations now since I did and we can say that it was an aberration. Waking up to find little old ladies consoling me when I'd just got back from a week of mountain biking in The Alps was embarrassing. Hooray for eating before the session and hooray for spinach generally.
Interestingly, my drained state and uninspiring day generally has given rise to an idea for a collaborative method of pruning the search space of web queries. Probably not going to be the next PageRank, but I've installed Google API to have a play.