This had a good response last month so I figured I'd try it again. Post your startup here and I'll create one automated test for you using Reflect, the test automation product we're building. The test can be anything you want:
...Or anything else you can think up! I'll set up your test to run once per day, so going forward it'll email you if it detects any failures.
If you're interested, add a comment here with a link to your startup and a short description of what you want tested. Also make sure you sign up for a Reflect account (it's free - no CC required) before you add a comment so that I have somewhere to put the test.