I got conned at work with someone from different department and their sponsor-me crap…. She wanted the money before the event ...
@Puzzledandpissedoff
This is another thing I don't understand. Back in the day you'd write down the names, do the activity, and then collect the cash based on your results.
Within the net it's even easier now, but no - folk seem to want cash upfront.
This. ^
Some years ago (maybe 7,) a couple of little girls aged 9-10ish, knocked my door around 11am on day, asking me to sponsor their 'sponsored walk' around the canal path from one point to another - 7 miles altogether. One said 'most people are paying a pound a mile.'
I could see 2 adult women who I assumed were teachers, walking with around 12 other children and they were all knocking on doors in my street (many didn't answer.) I said 'umm OK then, give me your sponsorship form and I will give say 75p a mile.' (around a fiver.)
One girl said 'we have already done it so we need the money now. Today is our last day to collect the money off people. So we need it now.'
I said 'but I don't have any money in the house. Only a pound coin and a bit of silver change in my purse.' 'That will do' said one. I was stunned but handed the money over. (£2.15 in the end.) The two girls stood there and watched me tip every last coin out of my purse, took it, didn't even thank me, and walked off... 
I am pretty sure it was genuine, although, as I have nothing to do with the school or any of the teachers or mums there, I never found out. But I said to myself, that is the last time that will be happening.
My favourite was the guy at work who did a sponsored slim, put more weight on instead, and told us all "You can still give me the money if you like" 
LOL what a cheek! As you say, it's a bit odd how people want the money upfront these days, and I do wonder with many 'sponsored things' how much money some people keep for themselves.