Post to ping.fm from your widget dashboard
First off you'll need a Mac (buy one if you don't have one so you can try this out) and I believe a version of Safari greater than 3.
Go to the ping.fm dashboard
First you want to login. See in the dashboard where you're used to posting regularly? Now there's an icon
that will allow you to "pop-out" the window which means you can experience the ping.fm posting awesomeness aside from your normal browsing. Click that icon.

Right Click
Right click (control+click) anywhere to bring up the menu you see below and select "Open in Dashboard...".
Select the entire window
Drag out a section to select the entire window. Click the button titled "Add".

Post from your dashboard
Now all that's left to do is update a trillion social networking sites from the comfort of your dashboard.
