[jonathanjaeger]

About two years ago, some clever techies used the OkCupid subreddit to "hack" the OkCupid frontend. If I remember correctly, they used Javascript to display the number of messages someone received per day and how many they replied to (among other things). Eventually OkCupid came across the info and started putting everything server-side.

[dsshimel]

What information were they getting from the subreddit? Just usernames or . . . ?

[oijaf888]

The stoplight indicator and a few other things were done via client side js with non obvious variables names. Once that Greasemonkey script came out it was quickly moved to the server side since there was no reason not to do it there. I believe it was just on the client side due to ease of development when it was being built.

[jonathanjaeger]

There's an OkCupid subreddit (http://www.reddit.com/r/okcupid) where people ask for advice and exchange funny stories about dates. When more data was stored on the frontend, people would make scripts so you could search for people based on attractiveness and other parameters. For example: http://www.reddit.com/r/OkCupid/comments/qi8iw/understanding...

[cup]

You could see how long ago the person recieved their last message, how many messages they were getting on average and also I think some scale thing which could extrapolate how frequently they wrote back to messages. It was a long time ago but incredibly interesting / invasive.