with tumblr you can turn off the infinite scroll, go back a page so it ends in a number then a long number, make the first number something giant so there's room to page forwards again, then change the last number back and back until you find where you left off.
that's still a bit rubbish though, the knife on the space bar probably worked with less fidding, it would just crash my computer looooooong before getting anywhere.
no subject
like at the moment my dash page is
https://www.tumblr.com/dashboard/9558/-126087479216
and if I want to see yesterday I could make it
https://www.tumblr.com/dashboard/9558/-126007479216
or maybe use the instructions
http://lsmoments.tumblr.com/post/46716818218/how-to-go-to-any-date-in-general-tumblr-tags
that's still a bit rubbish though, the knife on the space bar probably worked with less fidding, it would just crash my computer looooooong before getting anywhere.