I see a lot of members saying that they left a message in the "last page" or that they have "read the last 6 pages". Here is my gift to you!
Under the User CP you can click on "Edit Options". In those options you can increase the amount of posts per page of each thread.
I have it set to 40 so I don't have to continually load page after page to read a single thread where most posts contain little substance.
I don't recommend this to members with slower internet because your load times will surely increase; but if you like to read entire threads, like me, this is a useful option.