Hi Giddypig,
absolutely agree with zipidee, and in particular: try the mytomatos.com! I also discovered it here, and it helps sooo much!! I doubt I'd managed to write up my literature review, plus method, plus one analysis chapter all during last sommer without the tomatos!!
Indeed, I'm using it right in this moment as well, answering this post during a 5min 'well-deserved break'!! Try it out!
Good luck!