Online Forms are the most efficient and scientific mechanisms for collecting data from people. For the contact form at TECK.IN, I use the wordpress plugin by Dragon Design. Ananthapuri.com has a few Zoho Creator forms to handle new email requests and password reset. I am subscribed to the Zoho RSS feed in Google Reader so as not to miss any request.
Wufoo is a great online application that helps in designing and hosting online forms in a few minutes without writing a single line of program code. Wufoo automatically builds the database, backend and scripts for the form.
You can design your own contact form, online surveys, job application, workshop registration, event calendar, account management, bug tracker, invitations, wedding planner, home finance, etc..
Wufoo forms and reports can be made either public or private. By default, all new forms are public and all new reports are private.
Supports all latest browsers. You can easily integrate Wufoo forms to your website by embedding simple Wufoo code in your website. Wufoo also provides API for developers to build their own customized forms.
Other than the admin reports, Wufoo can email you entries, let you subscribe to them as an RSS feed and export them as an Excel document.
Wufoo free option provides support for 1 user, 3 forms, 3 reports, 10 fields and 100 entries per month. Wufoo has paid plans for high usage forms.