First, sign into your Yahoo! Address Book and click Options in the upper-right corner. Then click Clean up Duplicates on the right side.

The “Clean up Duplicates” window opens.

The tool automatically searches for possible duplicate entries in your Yahoo! Address Book and displays them in a list. Next to each contact, the tool indicates the number of entries that are potential duplicates, as well as the type of duplicate: exact or similar.

Mary Lee—3 exact—means you have 3 exactly identical entries for Mary Lee.

John Smith—2 similar—means that you have 2 entries that contain similar information (but not totally identical) for John Smith. (One entry might have his name and phone number, the other his name and email address.)

1. Double-click any name or ID in the list to review the person’s info.
2. On the right, under “Merge Preview”, you’ll see what a merged entry for this contact would look like. What do you think—do you like it? If so, click Save and Next.
3. If you see information under Merge Preview that you don’t want to keep in the final merged contact, you can do one of two things:
   1. In the “Duplicates” column, un-check “Merge this duplicate” for the contact info you don’t want included in the merged contact. Watch how Merge Preview adjusts to reflect your change!
   2. Or, in the “Merge Preview” column, click Edit near the information you want to edit—and then edit it.
4. When you’re satisfied with the merged contact, click Save and Next.
5. If you’re not ready to merge the duplicates into the proposed merged contact, no problem. Just click Skip. The data for the contacts will remain unchanged, and you’ll go to the next potential duplicate. You can also click Back to List to return to the big list of possible duplicate entries.