Back in January 2011, I built a little website (http://www.airportgasfinder.com) to help people find gas stations near airports, so they wouldn't have to worry about refueling rental cars on the way back to the airport. I built it on Rails 3.0, with jQuery Mobile for the mobile interface.

I let the site go dormant for a while, but resurrected it recently. When I rebuilt it, I used Bootstrap for the UI and decided to rip out jQM in favor of Bootstrap's responsive features. It took me a lot less time to build the new mobile UI, it feels faster and less clunky, and it has reduced my workload going forward, since I no longer have to maintain parallel sets of views (e.g. index.html.haml and index.mobile.haml).

I cannot imagine ever using jQM for another project.