I set up a web dev blog in 2003, at ILoveJackDaniels.com, and after a few months of rubbish blogging starting doing free cheat sheets to download. At its peak, from AdSense and text link ads, it made about $1200 per month. I had to move domain (trademark heat), and moved to AddedBytes.com. Lost lots of traffic and links, unfortunately. Ad revenue dropped over time (around $100 at its lowest), and I recently ditched the text links and adsense to go with CarbonAds.
Dude. Your cheat sheets were amazing back in the day (2004) when I was first getting into LAMP. The HTML entities sheet and CSS sheet were lifesavers. I had them all printed out and hanged up on the wall above my monitor.
I can attest that Jack Daniels is litigious and they will actively defend their trademark. Jagermeister will also. And Chuck Norris. I speak from personal experience.
I LOVE jack daniels. Your site was incredibly helpful, I think I have 100 copies of various cheat sheets across all the computers I've used over the years.