I don't recall anything on brinning ribs but if you do a search on the topic you may find it. Nor do I recall a beer brine. Most of the discussion is around brining poultry. That process is felt to enhance the taste and permit the poultry to be cooked to a higher internal temp without as much of a drying out problem. You'll find a great deal on that subject and, in fact, a seperate forum section that includes brining. Most here cook there poultry at a higher temp and not low/slow; however I often do it low/slow.
Paul