Remember AxE that like a gun, it isn't the istrument/app itself that it is illegal or that kills people but the use that you do with it.
You know that bit of reasoning would be even better, if you replaced 'gun' with 'machine gun' or maybe 'nuclear bomb'
Oh but wait-a-minute, those are illegal...
laws are different all over the world, but there is a quick and easy test...a butter knife is not illegal, because most people use a butter knife to spread butter (and before you troll me, AND OR peanut butter, and in some countries JAM and even a marshmellow type spread on holidays)...and it doesn't make the butter knife illegal simply because one wack job used a butter knife to commit a crime.
By the same token, machine guns in most all countries are almost always illegal because they are only used to kill people....oh sure, maybe 1% of the time, the use was simply historical display...aka like in a museum, or maybe just to teach gun design to an aspiring student...but it fails the test, of how its 'typically' used.
So take something like a hunting rifle, where I live, those are also legal...legal because 99% of people with a hunting rifle, use it to hunt, not to kill people.
Does MLDonkey fit the 'typical' use test.
You decide. BUT GET REAL.