[unabridged]

If they used and published a fair algorithm for matching, they wouldn't really be involved in the matching they would just be providing a venue. Similar to a city providing public space for people to meet, like a fair.

Do you think the FBI, NSA, etc doesn't already have access to photos posted on dating sites in the US?

[smegger001]

NSA match? Based on your porn search habits, google search history, amazon order history, geographic location, and a social graph based on phone record metadata we recommend you the best possible match.

[samhw]

Even if true, "have access to" is doing a lot of work here. If I had a Borges-style Library of Babel with all the possible books in the world, all configurations of the letters of the alphabet, I would technically "have access to" all human knowledge. But that's very different from having a curated collection which includes specifically only those things, filtered perfectly for you.

[google234123]

No, that's conspiracy theorists stuff. Of course, they can maybe get access with a court order.