They are presenting TW games:
http://www.amazon.co.uk/exec/obidos/..._ya_os_product
They are writing the "update news" on Steam (which should be done by CA, like all other devs use this feature for their own not for foreign "advertising")
http://store.steampowered.com/news/?appids=34330
http://store.steampowered.com/news/?appids=214950
They are one of the first posting marketing like interviews with CA staff and very "exclusive" contents:
check TW information directory
Any explaination for this special business relation ? :o
Perhaps someone knows the truth, and we do not only need to presume things.