When working with Revit, Excel and even coding, sometimes we want to paste text without formatting.  There are various ways to do this, but I think this is the easiest…

Download and unzip the appropriate version:
PureText 3.0 [32-bit] (Windows 95 – Windows 8) [13k]

PureText 3.0 [64-bit] (Windows XP – Windows 8) [14k]

Run PureText.exe

Next time you have something in the Clipboard and you want to paste without formatting, just use WindowsKey+V

More info:
PureText Home Page