I am a huge fan of ReSharper’s Multiple Entries Clipboard. However, recently I have been struggling with a weird issue where the clipboard always seemed to get entries that contained a bunch of empty lines. This issue was especially common when I was moving code around and would delete extra empty lines.
I favor keeping my fingers on the keyboard and will often highlight text with the Shift+Arrow Key functionality rather then using the mouse. It is not uncommon for me to do this with empty lines then press the Delete key to remove the selection.
As it turns out, Visual Studio uses Shift+Delete is a shortcut key for Cut (in addition to Ctrl+X). As I tend to fat finger keys, quickly switching from Shift+Arrow Key (for highlight) to pressing the Delete key, I was constantly pressing Shift+Delete. Granted it removed my selection as I was expecting but it was also putting that empty text only my clipboard (a non-desired result).
See http://msdn.microsoft.com/en-us/library/0hbf628s(VS.90).aspx for other default shortcut keys.