Does anyone know or tried to see if there is a limit per AA alloted when you spend the points for this ability. For example does the 1st one give you 25 more, 50 more, 100 more etc, etc...
1 rank gets you 1 additional skill (you get one to start with and you pick by skilling up over 200) allowable over 200, upto it's max, currently 300, in any skill other than research. Some skills are specialized skills like Poison Making and Alchemy are initially capped at 300 and aren't included in this line of AAs. Research has it's own line of AAs for cap raising.
In case that wasn't clear. To start, any one of the seven skills of Baking, Blacksmithing, Fletching, Jewelcraft, Make Poison, Pottery, and Tailoring can be trained to over 200. After that you will need 1 rank for each of those skills you wish to train over 200.