I don't even know how that happened. I literally just slapped that map together in like 30 minutes and was just playing with the idea of having rising platforms come out of goo. I wasn't even really thinking about what I was building.
I really think that it's just a matter of luck, but still it's awesome to find out that over 3000 people subscribed to some garbage you made during your lunch break. :D
EDIT: I guess this is a good a time as any to ask that you guys check out my maps and leave me some feedback. I'm really getting into the map making, and will probably be toying around with the Hammer editor at some point (I wish it had a Mac version so I could use it on my bitchin'-ass Mac at work).