Freelancer Helper will let you find worthwhile projects on freelancer.com, avoid dishonest employers and use some extra features.
Features
Hide projects by employers who are from some country
Hide projects by employers don't have some verification e.g. if they haven't verified their payment method.
Black list of employers whose projects you want to hide
Hide projects if they have some tag e.g. 'Wordpress' tag
Open project attachments in the browser, without downloading them to your computer
Show employer name, avatar and opened/awarded projects' stats on the project page
Add a 'Show employer profile' button, which lets you see employer reviews on their profile page
Change how many projects are visible on one page in search. (normally it is 10) This is useful if you have many filters and often get 0 results per page.