Just to clarify - at the moment I already have far more colonies than I need for my own experiments, and it's the easiest thing in the world to just keep multiplying them - the only limiting factors then become the number of boxes available and the cost of sugar for winter feed.
So why on earth would I want swarms ? They're just more bees that I don't have any need for - and more importantly - they're bees from unknown sources. When I re-started beekeeping a fair time ago - I used to collect every available swarm in order to swell apiary numbers. But, those swarms were ALL (with the exception of just the one) really bad-tempered mongrels which I then had to re-queen.
Sure, I could still re-queen swarms - but re-queening doesn't cure aggression immediately - that takes a month to six weeks - and I'm no longer prepared to put up with that kind of nonsense when I really don't need to.
So - I'll let someone-else collect swarms around here, and wish them the very best of luck ...
LJ