If it's a one-page thread, and you're using Firefox, get the add-on called Back to Top. It lets you go to the top (or bottom) of the page with the click of a button, or from the context menu. Cuts down on scrolling time, and on wear and tear on your scrolling finger.
If it's a multi-page thread and you want to be able to check things like the name of the OP or when the last post was made, leave the forum main page open in one tab and open each thread in a new one -- then you can just click back to the main page to check.
Last edited by Vanya; March 30, 2013 at 01:49 PM.