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No worries :)
In a nutshell, sndbox is a community of creative and entrepreneurial steemians who are part of an incubator which helps provide rewards and support to all its members.
One of the top 5 best projects on the blockchain IMO. Here is a link to their feed:

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Awesome, I've given them a follow so I'm sure I'll learn more about them soon. Thanks for taking the time to respond.