Not one of them is a legitimate image of a Sarah Palin rally. Do you see any crowd pictures there? They are gone, purged. They don't exist according to the chief librarian of the Internet, Google. The crowd images are still on the websites... but the index no longer links to those particular images. If the image isn't capable of being found, does it exist? This is reprehensible.
Here is an example of what happened to the COLB images.
Google Search results for "Barack Obama Birth Certificate":
Results from the day of purging of the COLB images on Google, July 17, 2008"
Same Search, July 16, 2008, the day before Google purged the COLBs.
The green certificates are the Obama images.
See? Not poor algorithms. It's Enemy Action.