I got the Steam app for my phone as well. When I start it up, it switches to the 'Friends' view -- which is completely empty. I have no friends (on Steam), and that feels lonely. Even the recommendations work with the Friends that you made on Steam.
Currently, there's a huge sale going on. I've seen a co-op action RPG title that seemed cool. I could even buy a four-pack for a hefty discount, and gift three copies to friends so we can play together!
...Except I don't have Steam friends.
Add me on Steam! Account is fubfubfub! Especially if you like RPG stuff!