Logo is a completely useless language for anything else than drawing. I had only two experiences with this language. The first was in my 8bit atari but after writing two programs and trying to save them on the tape I managed to kill it
. The second came after 2 years and when i was at high school and at the age of 13 and we had to learn some of it along with gwbasic. I managed to teach my teacher a few things at that class.
Other than it's an interpreter and it was created as an experiment to order a small robot (turtle looking) to draw a few lines, I haven't seen or heard anything else being done with logo. It is however one of the most important steps in the history of computing, that it is.