JavaScript Blacklist is a simple extension for Safari 5 which blacklists scripts from a configurable list of domains. If a common “utility” script used by sites that you visit is annoying you, this will let you opt out quickly and easily.

I use it configured with the following domains, to block all sorts of annoying in-text ads, toolbars, and trackers that knucklehead publishers foist on their readers.

• tynt.com
• intellitxt.com
• snap.com
• meebo.com
• infolinks.com
• kontera.com