Mailcheck.js - How we decreased sign up confirmation email bounces by 50%
I think there's a general purpose need for "optimal" form components.  Let me elaborate:- Fields for typing-in a credit card- Fields for typing-in an e-mail address- Fields for typing-in a U.S. street addressThere are widely-known techniques for optimizing data entry for these fields, yet these techniques aren't widely adopted, and further yet they're known to increase conversation rates.Someone should build a (subscription) service where you can embed a bunch of fields (and labels) onto a form with a single line of Javascript.Then, the fields would render on the page.  The performance of the fields (their effect on conversion rates) could be measured continuously.  New variants of the labels and fields could be A/B tested continuously as well.  That is, the performance of the fields would improve over time.If there's interest I'll elaborate in a blog post (with mockups).made a few edits