Click the Install This Script button near the top of this page, then follow the on-screen instructions.
Visit any video of the author you want to support (e.g. www.youtube.com/watch?v=RZdA4jiXG7U) and click the AdBlock Plus icon next to the photo channel. Copy or code appears. You need to use that as part of your whitelist filter in Adblock Plus.
Click the Adblock Plus icon and choose Options.
Click the Add Your Own Filters tab.
Paste the copied code in the text box near the top, paste the user name in the appropriate spot, then click the Add Filter button. (e.g. @@||youtube.com/*&user=ClarionDeLaffalot$document)