They already have trademarks on poke and wall, I don't think they're trying to be malicious, they're just trying to protect their brand. They won't be able to

They already have trademarks on poke and wall, I don't think they're trying to be malicious, they're just trying to protect their brand. They won't be able to stop people using Face in unrelated contexts, nor will they be able to stop people who already use the word Face in their brand. It will stop people creating product with names primarily being composed of the word "Face" in a competing space with Facebook.