Same as Prudie.
Jason Manford, on a Saturday evening, through his FB page, nominates a crowdfunding charity and asks his follows to give a couple of quid. They call themselves Charity Ninjas. This week they raised £10000 for a lady to have reconstructive surgery to her face after is was eaten by necrotising fasciitis. It's addictive, and heartwarming, watching the money go up, and up and up.
I wouldn't give a bean to any of the nonsense ones that you mentioned above.