I've actually been considering an approach that forces me to weigh myself less often. While I like to see my progress, I also feel like the changes I'm making in my daily diet and exercise need to be stand-alone awesome. If I'm judging the results of my efforts by the scale alone, and because it will take me several months to hit my goals anyway, I feel like I'm going to maybe lose my focus a little.
Also, part of the reason I want to lose weight is my appearance (ah yes, the vanity!) I really don't feel comfortable in my own body right now, and looking at my entire old wardrobe just makes me mad at myself.
Maybe taking the "scale factor" away will make you feel like you need to be more conservative with your approach to food, or give you an extra push to work hard at your exercising because you want that result that you only get once every week (or more) to blow you away.
My daily motivation = my appearance and comfort
My long-term (and larger) motivation = my health
oh look at that.. neither of my main motivating factors is my weight (even if it underlies both)
So -- I know that was a whole "life history" but really, it's my reason for explaining why I don't necessarily think that weighing yourself every single day is ALWAYS productive.
That being said -- EVERYONE IS DIFFERENT! I hope all of the comments on your post will help you decide whether you need to rush out to get a new scale pronto, or if you can take it easy and maybe this will give you a chance to focus on the things that can't be measured on a scale.
Whatever you decide, I for one am behind you 100%!!