We're looking at implementing Facebook Connect on our Join page, allowing new users to create an account either through a standard sign-up form or through Facebook Connect. I'm looking for thoughts on the best way to also present an email opt-in option.
On our standard form, we have a checkbox, checked by default, to opt-in to our newsletter. Adding the same checkbox beneath the Facebook Connect button seems like the most sensible way to go, but it also feels a little clunky to me.
Another option is to not send email to Facebook Connect joiners by default (effectively unchecking and hiding that newsletter box), but boosting newsletter sign-up is an important business goal.
(By the way, the Facebook Connect permissions window that appears the first time you connect through Facebook specifies that we're asking permission to send you email, but it doesn't specify what that will be, and we should be explicit about what type of email our users can expect from us.)
So--what are the best implementations of Facebook Connect that you've seen, specifically those that also ask for email opt-in? What would you do?