Customer/User Suggestion: Show when item last viewed

When I am purchasing a theme via Envato, I usually view many different themes. Sometimes I go to the item’s page and view the description and then view the live demo, and sometimes I go directly to the demo. Either way, it would save a lot of time if the site automatically showed the date/time that the live demo (or at least the description page) was last viewed by me. This is because I typically spend a few days looking through themes, and each day I can’t remember every one I’ve looked at.