Aside from supporting your favourite broadcasters?
Well, you also get an awesome subscriber badge in their chat as well as a set of custom global emotes that will work in any channel on Smashcast.
You also have the opportunity to participate in subscriber-only polls and giveaways in that channel, as well as if the chat is set in 'Subscriber Only' mode.
If the broadcaster has associated their Discord channel to their Smashcast account you'll also be able to use their Smashcast sub icons globally in ALL Discord channels you're a part of.
We will have more subscriber perks coming to the site in time, so stay tuned to social media for the latest news!