Where to get feedback on white paper?

I have an idea for a Dapp and a rough draft of a white paper. Where is the right place to solicit feedback?

It feels spammy posting here "look at my white paper." Is there a subreddit, slack channel, etc that is more appropriate?

Submitted October 08, 2018 at 06:00PM }
via reddit https://ift.tt/2C6l175