Real smart on the companies' part to start accepting bitcoin when the price is low. Pretty much everyone feels like the price will start surging sometime within this year, so once the companies' accumulate bitcoin at a low price point like this, they will have a lot of fun when the price starts to increase later on in the year.
That's fine if they can do it in the legal way. Accepting bitcoin as a company is really a challenge (if you are outside of Japan), it depends on your book-keeper and on your tax-advisor too if they advise you to do it or not. I can imagine that the owner of a small company let people to pay with bitcoin some smaller amounts and the owner puts his money into the company instead of the bitcoin, but in this case it's not the company who runs the risk of the bitcoin price volatility but the owner himself (and also he can enjoy the benefits of the bitcoin price raise, if it rises...) Bitcoin don't need regulation between people but when it comes about company and people relation, there's a need for at least a basic regulation to let bitcoin reach the mass adoption sooner or later...