Change the link to invite new users to a link to podupti.me
On the joindiaspora.com pod there is a link that can be used to invite new users.
as I understand it joindiaspora.com is closed to new users. I would propose that this link is changed and points to
Which has a link to a random pod sign up page.
Given that joindiaspora is clearly has a lot of users (and a big thank you to the admin for sterling work keeping it running) it may help new users. If they get told they can't sign up it will just or could simply put people off.
Just an idea.