I've been using Plex Media Server for a couple of years and it works great, although there is somewhat of a learning curve. I've witnessed no suspicious activities on the part of Plex thus far.
This is the correct URL for plex, a local media streaming software.
I rated "be cautious" for kids because the site's privacy policy says "the Plex service is not intended to be used by children, without involvement, supervision, and approval of a parent or legal guardian."
I marked "Other" for attributes because the Plex service does store information about your local media and their privacy policy gives them pretty broad authority to release that information if they suspect that some of your media isn't necessarily fully licensed.
Basically a good site, though.