Seems like this could be an interesting service to try. The A/B testing market is pretty expensive in general, with most solutions being at least $200 a month, and usually much more.

Something that provides a free alternative to stuff like Optimizely, VWO, Adobe Target, etc could get a pretty large audience, and bring in a ton of users/companies who otherwise wouldn't be able to afford to do this sort of testing at all.

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Though a decent open source, self hosted solution could work even better.