Check out his blog post on it.
LauncherPro Shortcuts are a new way of
creating, adding, and sharing custom
shortcuts for LauncherPro. Shortcuts
are created and shared as LPS files.
LPS files are self-contained shortcut
files that have all the info needed to
make a shortcut, including the label,
icon, and Android intent (more on
intents in a bit). They are written in
a new format that I created for this
purpose, which is based in XML. Don’t
worry, I created a web-based tool for
creating these files so it’s as easy
as filling out a form and downloading
the resulting .lps file.
always needs an Android intent to be
“executed” when the shortcut is
clicked. Intents are the standard way
of launching activities/apps and
sending information and commands to
apps in Android. If you want to create
your own LauncherPro Shortcuts, please
read this page for a detailed
explanation of how intents work and
how to make your own.
LPS files need
to be stored in your SD card, either
in the root of the card, or inside the
folders “download”, “downloads” or
“lpshortcuts”. To add an LP Shortcut
to a homescreen, long-press on a blank
spot, choose “Shortcuts” and then
“LauncherPro Shortcuts”. If you have
any LPS files in the previously
mentioned folders in your SD card,
they should show up on the list. You
can click on “Create New” to go to the
web-based LauncherPro Shortcut Creator
tool. You can also access the
LauncherPro Shortcut Creator tool from
your computer, and then put the
generated LPS file in your SD card.
He also links to a lengthy forum thread where people are posting some of their shortcuts. I can't seem to find any other resources of shortcuts.