To think putting packets of tissues next to people on the tube with a note is unlikely to make money?

[JeffsanArsehole]

The note said she couldn't find a job, had no money coming in and had a 2 year old.

It's all a con.

what's the con exactly? Are they really bankers looking to top up their wages?

Just people trying to get by. I can see how it may be annoying or unpleasant, but unless you are willing to give them a job, you can't just ask them to disappear.