Users of uber-popular Web form-building app Wufoo were greeted with an exciting new announcement upon logging into the service today: Wufoo has added Chargify to its list of payment service integrations, enabling business owners to accept recurring payments on their Websites.

The integration allows Wufoo users to link up their Chargify account via an API key, and then assign different prices to products listed in a drop-down menu or multiple choice field on the form.

Once the form is completed by the end user, their subscription takes effect and they'll be charged accordingly. Chargify can charge any dollar amount on any fixed schedule, be it weekly, monthly, yearly or some other customized time frame. It also supports set-up fees and trial periods, and the end date of the subscription can be defined up-front.

This integration should simplify the lives of any business owner looking to sell subscriptions or otherwise accept recurring payments online, as it takes practically all of the development-intensive, heavy lifting out of the process. Setting it up is a matter of dragging-and-dropping a Web form together, plugging in an API key and then copying and pasting some code to embed the form into one's site.

In general, Wufoo has a pretty powerful REST API that developers can use to integrate Wufoo with other Web apps, but its team has a tendency to do the heavy lifting for many popular third parties and then roll those integrations out for Wufoo customers.

On the payments front, Wufoo already integrates with Google Checkout, FreshBooks, Authorize.net, USA ePay and several flavors of PayPal. Forms can also be configured to send data to Campaign Monitor, MailChimp, Highrise, Campfire, Notifo, Salesforce, Twitter and others. Notifications of new form entries can be received via email, SMS or RSS feed.