Favoring a server has a few benefits.

If you favorite a server you can find it easier by using the favorites button on the home page so you can stay up to date with the server.

Favoring a server will allow you to find the server easier through the favorites section and vote for your favorite servers faster!

Some servers may offer in-game rewards for favoring their server, we do not guarantee this but its a possibility.

Favoring your favorite servers help add to the servers Score / Rank keeping it up top for other players to find the server an join in!