Here: https://bitcointalk.org/index.php?topic=317408.0 is a (so far) 94 page thread about TAG. 

To summarise it, you can mine and sell TAG just like any other coin or you can use TAG as a reward for your website/business/crack house/ whatever..    I recommend you read at least the first few pages of the above thread.  The developer of the coin really has some big plans for it.