ALL INSTRUCTABLES 404 for non-members/when not logged in
If this is just my computer spazzing out then I'll ignore it, but if it's a real problem then presumably it is putting off a lot of non-members by presenting a fundamentally broken site.
The 404 message:
We're sorry, the URL http://www.instructables.com/id/DIY_Solar_Heater/ is either incorrect or no longer available.
If you followed this link from outside of one of our sites, we'd appreciate if you'd let the owner of the referring page know.
If you followed it from within our sites, or if you believe you received this message in error, please send e-mail to firstname.lastname@example.org and let us know that you got error 404 looking for http://www.instructables.com/id/DIY_Solar_Heater/ which was linked to on page http://www.instructables.com/tag/type:id/?sort=RECENT''