Ask HN: Any gotchas with running OpenVPN+pi-hole for the general public?

I recently setup OpenVPN+Pi-hole on a Linode box and have been happy with the browsing experience so far. I was thinking of inviting friends to use my setup - maybe charge them a little bit of change to help pay for the Linode. And this works well, maybe scale to the general public.

Any downsides to running a VPN server for the general public? My concerns are around legal and logging requirements.