I use snapchat for my personal blog, I use it as a way to share my daily life/activities with my followers as it gives you additional content away from the edited pictures and youtube videos.
However in terms of igaming i find it would be difficult. However, you could use it as medium for exclusive content such as betting tips. What i see other people do i snapping about X and then saying - i've put a link to X on my twitter so you can get it too, that way you can follow up your tips with an affiliate tag.
I find it quite difficult to gain followers as people need to manually look you up and add you rather than just clicking follow, and none of your content is shared.
Just my two cents.
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