There’s a pay for plugin that can do that
http://wpebooks.com/custom-registration/
The url is the username by default, actually. you can manually redo that signup form and hide the ‘gimmie a blog’ part.
@andrea im looking to have the basics of the wp-signup.php in with a form built with Formidable, do the values submitted of the form pertain to user-meta ? or how can i like the two forms? I’m able to register users via the Formidable form but it will not create a site.
BTW i bought your e-book Andrea but cannot figure it out to save my life. could i add this to my current form?
Other way around. 😉 Like Ron said, the plugin Formidable is probably not written for multisite.
Ditch it.
Use the page template in the ebook. Edit that page template.
signup.php is empty, 0kb with the file i downloaded.
Ron’s working on it – we’ll continue in the other support area.