Wordpress membership plugin compatible with Marketo

There is the Tracker as plugin. http://wordpress.org/extend/plugins/marketo-tracker/

You want to do a sign up form with progressive profiling or just a sign up form.

You can use the API to do the first parth. and do what ever you use for creating forms. If you want progressive profiling you need to code more.

Lynda, I'm gathering requirements to custom develop this.  Two requirements you mentioned:

1) Integrate wordpress form with Marketo 
2) push login credentials from Marketo to Wordpress

Anything else you'd want from this plugin?

Hmm not sure if the Tracker plugin totally achieves what I need.

Basically I am setting up member protected content on the wordpress site. Now I could just use a plugin to manage this, however if the plugin manages the sign up process then I have to get that lead data back to Marketo. Conversely if I try and use a Marketo form for the sign-up process then I have to hook into the plugin to issue a password. Hope this makes sense?