Some new functionality has been added to FormSpring — personalized responses. You can now use the data entered in a form directly in the web page confirmation message or email confirmation message. This enables you to address the submitter by name, or display portions of the submitted data back to the submitter for their [...]

A couple new settings have been added to FormSpring fields. Both of these can be found under the field settings on the field design page.
“Other” options
For checkboxes and radio buttons, you can automatically add an “Other” field. Selecting this will also display a text field next to the “Other” option on the form [...]

Maybe you already knew this, but every form created by FormSpring passes XHTML and CSS validation. If you’re a web designer struggling to create forms that comply with web standards, you can use FormSpring to easily create a form and download the XHTML for use on your own site. Use the W3C’s markup validator [...]