Linking your Steam and Discord accounts gives you extra perks on the Rust server. To see the perks for linking your accounts, go to the #account-linking channel in Discord.
The process of linking your accounts is very simple.
1. Go to https://link.rustyog.net/
2. Click on Get Started and sign into Steam.
3. Click on the Discord Member button to link Discord and Nitro (If a Nitro supporter).
If you boost the Discord server after linking your account, just log back into https://link.rustyog.net/ and click on Check again.
If you have any problems with these steps, please submit a support ticket in Discord.