Disable Ping Dropdowns in iTunes 10.0.1

iTunes 10.0.1 introduces a new feature: most items now have a 'Ping' dropdown button where the Music Store arrow links used to be. These appear even if you've disabled Ping.

The notes I added to a PDF file with Skim were not visible on my iPod Touch after exporting it as a PDF with the embedded notes, dragging it to the books section on iTunes, and syncing. After some experimentation, the solution I found is:

Mac OS X users have not needed the ability to defragment their hard drives. Most defragging is done in the background by the OS. There is one caveat: OS X does not defragment files larger than 20 MB. Quite often, many game files are easily larger than 20 MB. Fragmentation of game files will negatively impact performance of games, particularly FPS games.

OSX has a nifty program called Screen Sharing. It lets you remotely access other computers, whether they be UNIX, Mac, Linux, Windows, or any other type of box. All the other box needs is a VNC server, which Macs have built in since 10.4.