"Ignore Update" option nolonger available post-Mavericks?!

I have an easier workaround than that, at least for iMovie. I prefer to use iMovie 9, but Mavericks wants me to upgrade to the newer one. I don't want the newer one (tried it, and it runs like a sick dog on my old iMac), and I don't want to be nagged about updating it. So here's what I did: put iMovie 9 into its own folder in the Applications folder. Then, open System Preferences and go to the Spotlight panel. Click the Privacy tab. Drag the newly-created iMovie folder into the ignore window, so now Spotlight will ignore that copy of iMovie (or click the + button and add it through the finder dialogue). After I did this, the red notification badge on my App Store icon in the dock disappeared. Now that Spotlight can see NO version of iMovie on my hard drive, the App Store has stopped concerning itself with nagging me to update it! I don't see why this method wouldn't work with any other app. You just need to put it in a folder, and then tell Spotlight to ignore the folder in System Preferences.

to theoriginalDude: the problem is that right-clicking, or control-clicking, does not work on certain apps such as iMovie and the iWork apps. Hence the enormous amount of frustration among Mavericks users!

I have a more option. I clicked it. The control-clicked every word in the description. Nothing - no menu, no action, no options.