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?