You might also want to consider writing your dissertation in Word or some other word processor, then cut and paste it into here. That way you can take all the time in the world to get it done and no need to worry about it going bye bye.
Any site. When I log in, if I don't stay active it closes me out and need to relog back in.
\I'll poke the "Remember Me" button. I am not sure that will work and will congratulate you if it does.