I recently read an article in Consumer Reports about online budgeting tools. I decided to try out Buxfer.com myself and was really impressed with the site.
You are easily able to upload statements from your bank, paypal, credit card and other accounts. The site automatically applies tags to certain transactions so you can easily chart your expenses for groceries, gas, rent etc.
Also, Buxfer complies with Consumer Reports WebWatch guidelines on privacy, service, and other factors.
You might also like Mint.com.