In my haste the other night to post (opps it was last night) I meant to add two great sites I visit whose authors blog about saving money and debt reduction.
Lightening has a great post -with a very appropriate and catchy title at the moment - Cleaning Doesn't need to cost the Earth. This is an excellent article
She also has lots of tips to reduce your grocery bills and spending in general.
Louise at My Journey to Eliminate Debt has a lot of tips and links to calculators . You can do your own sums on what you will save on your mortgage etc. She also has information on internet marketing and making money from blogging.