Yes!
Besides skills also something like 'Nerd Knowledge' or so sth related to topics similar to google they have this internally so that employees can hit each other up for very specific info on certain things, or just to chat about that.
You can then add the topics you have specific knowledge on e.g. Poker, Trading, Stamp Collecting, Gaming, Streaming Equipment, Sneaker Collector or so, so ppl can hit you up with specific things about these topics