Every Safari user on Mac OS X should take a look at ClickToFlash which makes your browsing through the Flash infested World Wide Web pleasant again.
Using ClickToFlash, all of those icky Flash bits that have infected most webpages on the internets are replaced with a nice, smooth gradient and the word “Flash” set in a nice, pleasing font. When you want to view the Flash, just click on it!
Besides blocking Flash (with an option to whitelist certain sites) ClickToFlash has the very nice feature of displaying YouTube videos in the higher quality H.264 format. It even loads videos with a larger resolution than normal. Be sure to enable this in the preferences right after installing: Safari » ClickToFlash » Preferences.
While you’re in the preferences window you should disable the automatic loading of “Invisible” Flash. Find out why on the developer’s blog.