Jotform

JotForm (http://www.jotform.com/) is a form builder that allows you to quickly create customized forms using a WYSIWYG (What You See Is What You Get) form editor so you can see the results visually as you create the form.  A screenshot of a form in progress is below.

You can use standard Form Tools section to access tools like radio buttons, checkboxes and text boxes, use the Quick Tools for preformatted phone number and address fields, use the Survey Tools for matrices, scales, and "sliders" (see screenshot at left).  You can even incorporate Payment Tools such as Paypal, Google Checkout, or Purchase orders.

The forms can also be configured to send both notification emails to you, and confirmation emails to the end-user.  You can also send them to a confirmation page (or any URL you wish) after they've submitted the form.

Once you've created your form, use the Embed and Source Code options (see screenshot at right) to embed your form into a webpage or blog.  The only limitation is that the free version allows 100 submissions a month, and 10 payments a month.  For $10/month, you can receive 1000 submissions and payments per month.

Much thanks to Joy Bauder for discovering this easy to use tool.