is there an easy way to export the list of unredeemed humble bundle keys to word or excel?

You can use the small, free program AutoHotkey and create a script that will remove the lines of text that you do not want.

Download AutoHotkey and then create a new AutoHoykey script. I just right click on the desktop or in a folder, go down to "New", and then select "AutoHotkey script". Leave the text that is in the new script there and just go down a line. Paste the following text into the file and then save and close it.

^space::
loop 1
{
Send {up}
Send {shift down}{up}{up}{up}{up}{shift up}
Send {BS}{BS}
}
return

Run the script by double clicking the icon or right clicking it and selecting "run script" (this will not do anything yet, it will just launch the script so you can use it). Copy your list of games from Humble into a text file. You should now have a text file with 3 lines of text for each game with a blank line between each line. If that is correct then this script should work.

Go down to the bottom of your text file and click just to the right of the last game in your text file so that your cursor is right next to the name of the game. Now you can hold the control key and press the spacebar to run the script. This will delete the 5 lines of text above the line that you are on, leaving you with just the name of the games.

You can keep clicking control space to run the script for each game or you can edit the script and change the number after "loop" to whatever you want and it will repeat the script that many number of times. After editing the script (and saving) you will have to reload it by closing the running script from your taskbar and running it again or right click on the script in the taskbar and click "reload this script".

Warning: The script is just pushing keys on your keyboard. It will continue these actions until the script ends. If you click off of the text file while it is running it will still continue the key presses, but not inside of the text file. This means if you click on your desktop it will be pressing the up and delete keys on your keyboard on your desktop icons. For this reason, I would keep the number of loops in the script somewhat low, probably 10 or less. Also, don't allow the number of loops to go past the last game you need to edit in the text file because it will continue running the number of times your told it to which will keep deleting the top lines of text. When you get towards the end, it is best to just set it back to 1 loop, reload the script, and finish it 1 at a time.

AutoHotkey is a really good program and can be used for other things as well. I use it often for changing a long list of file names if the titles need to be edited in the same way.

It also comes in very handy if you have a game that doesn't let you rebind keys or locks certain keys. With AutoHotkey, you can rebind any key on the keyboard (or mouse) to a different key making the most stubborn games easy to fix.

For example, there was a game that required me to use the space bar to jump and I could not rebind it in the game. I play with the arrow keys and I wanted in on my right control key. All you have to do is create a script with 1 line of text:

RControl::space

Now, the right control key pushes the space bar.

Another example is when I was playing Lucius and it wouldn't let me bind anything to the buttons above the arrow keys (delete, end, page down). So I used autohotkey to bind all those keys to the number keys 1 through 6. Then I could bind the controls inside the game to the numbers 1-6, but i actually pressed the keys above the arrows to use those keys. Here is the script I had for that, pretty simple:

delete::1
end::2
pgdn::3
insert::4
home::5
pgup::6