If you’ve got a whopper of a spreadsheet, with thousands or more of rows, you’ve got a big problem if you want to make sure the spreadsheet doesn’t contain duplicate entries. Excel simply doesn’t have ...

Columnist Chris Long shares examples of how he addressed duplicate and similar website content to improve organic search performance for his clients. It’s commonly held that duplicate or substantially ...

Reader Sam Lightner would like to lighten up the number of duplicate photos on his Mac. He writes: I have lots of pictures on my computer. Some of them are in iPhoto, some aren’t. Is there any easy ...

How to average unique values in Excel the easy way Your email has been sent If you need to average a list of values in Microsoft Excel that contain duplicates without including the duplicates, don't ...