Using your car horn in Ecuador

One of the favourite past-times of the Ecuadorians is to hoot there horn. So far we have seen the following reasons for this:

1) Someone has pulled out in front of you (seems reasonable)
2) I am driving fast at a blind crossroads with no intention of stopping
3) Hello mate (this is possibly the most common reason in the Galapagos)
4) Do you want a lift? (taxis with an amazing regularity)
5) Do you want to get on this bus? (this is accompanied by a man shouting loudly out the door - more on local buses to follow)
6) I am rounding a blind corner on the wrong side of the road
7) The traffic lights have been green for at least of half a second, get moving!! (the most common reason in Quito)
8) The best of the lot: there are finches in the road and the sign told me to slow down and hoot at them rather than run them over

There are possibly more reasons but so far these are all we have observed.