Apparently that's old. The address currently on their website is https://blockchain.info/address/1BszW45pwXx7d7g4x9Xxbs9MGJEQcJsd3v although that hasn't received any coins yet.

Maybe the old one is fine too, but unless someone can shed light on why they changed from the old address, it's probably best not to send coins to it, although I'd hope if it had become unsafe they would have announced it loudly.