Now that you mention it, it's sort of surprising that there's not a url for each user. It's not quite as useful, but a quick look at network activity shows the

Now that you mention it, it's sort of surprising that there's not a url for each user. It's not quite as useful, but a quick look at network activity shows the data gets pulled from /user/[name].json, like: http://hn-karma-tracker.herokuapp.com/user/martinced.json http://hn-karma-tracker.herokuapp.com/user/martinced.json /user/[name] without the .json hits an error, unfortunately.