When I click 'sign up' it takes me to an 'about page' with the sign up form in the middle below a little explanation of the site.
On my notebook with a resolution of 1024x768 the form is actually below the fold in Chrome (I have a double row task bar).
I'd put the sign up form above the fold as the main focus of that page as that is what users normally expect from clicking on the 'sign up' link.
When I click 'sign up' it takes me to an 'about page' with the sign up form in the middle below a little explanation of the site.
On my notebook with a resolution of 1024x768 the form is actually below the fold in Chrome (I have a double row task bar).
I'd put the sign up form above the fold as the main focus of that page as that is what users normally expect from clicking on the 'sign up' link.