Laptop Battery question

I have a Toshiba Satellite laptop which runs on the Lithium Battery. I hardly ever remove my laptop from my desk thus it is always plugged in. Is it bad to leave my battery in the comp on a continuous charge or should I remove it and store it? I have heard many opinions stating to leave it in and just as many saying to take it out at 40% and place it in the fridge. I just want to maximize its life given the cost of a replacement. Is there an advantage to either solution or a better step? let me know. Thanks. :confused