When building links for various sites, I often find myself hand-typing and submitting the same contact information to many different directories and comment forms. When you are serious about getting links, this repetitive action gets tiresome.
Now you can get rid of your typing with the InFormEnter Firefox extension. The extension adds a small clickable icon next to every input field in a web form. When the icon is clicked, you can select pre-configured text to be inserted. You can configure it to display the most frequently used information such as your name, email, address, keywords, url, etc.
I generally store a varations of link anchor text and site descriptions, and sometimes edit them a little so each directory entry I submit is unique.
InFormEnter is not a true password manager such as RoboForm, but it is a free Mozilla Firefox extension, and I use it.