I think over 3k+ people use the new Gist hosting. (In our old hosting we had around 10k resumes. Not including those who by pass the free community hosting)
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On a personal note, I've loved having my resume in a standard;
- Depending on what type of company/person I am applying to I will change my theme on the fly. (Startup vibes I will make it look hipster, if it's a more formal role I will use a simple black and white theme)
- I use to lose my most recent resume constantly, having it in a Gist called resume.json that I just edit seems to have solved that for me.
- Hopefully one day a standard will get integration adoption so I can just upload my resume.json and not have to fill out the same form fields a hundred times.