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:<p>- Fields for typing-in a credit card<p>- Fields for typing-in an e-mail address<p>- Fields for typing-in a U.S. street address<p>There 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.<p>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.<p>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.<p>If there's interest I'll elaborate in a blog post (with mockups).<p><i>made a few edits</i>