Smart single-panel comics that are sure to tickle your funny bone and leave you grinning from ear to ear, especially if ...

Perhaps that's why CAST, a software analysis company that services many financial firms, sent us these cartoons as a funny (but gentle) reminder of the problems electronic trading still has to tackle.

It's really hard to be funny. It's even harder to be funny and get paid for it. But the cartoon editor of The New Yorker, Bob Mankoff, has made a living making people laugh for decades.