There used to be an HN DC meetup but it seems to have become inactive:<p><a href="http:&#x2F;&#x2F;www.meetup.com&#x2F;JoinHFDC&#x2F;" rel="nofollow">http:&#x2F;&#x2F;www.meetup.com&#x2F;JoinHFDC&#x2F;</a>