I definitely remember Hotline! Got me into trouble in college...a friend and I opened up Hotline servers on our machines and threw a piece of software on there (probably a cracked version of Macromedia Flash or something like that...) and a README that said "please leave something if you take something". A few weeks later, we both got calls from the sys admin at our school asking us to come in for a little chat...we hadn't really been paying too much attention, and apparently people had put all kinds of software/games etc. on there and that we had been serving up from our machines (I believe the admin said "millions of dollars"...but he may have been trying to scare us straight...). We didn't end up getting into too much trouble for it (I believe we were banned from using the internet for a few weeks) and ultimately I got hired to work in the IT department, so it worked out for me at least...