#RPGaDAY - Day Three: How Do You Find Out About New RPGs?
Osmosis, really! And dumb luck.
Just from trawling the interwebz, reading Facebook, following the blogs of people and companies whose opinions - and products - I respect (e.g. +Erik Tenkar, +Timothy Brannan, Wizards of The Coast, Green Ronin, Kobold Press, Monkey House Games etc)
I also get weekly mailing lists from several online UK stores (as there's no FLGS in our vicinity), but there's no real method or system.