GlimmerBlocker, ClickToFlash, and Readability

•••you can install Glimmerblocker and it will block non-flash ads in safari 4 so you can have an ad-free web experience.

    http://www.macupdate.com/info.php/id/29689/glimmerblocker

•••click-to-flash is a really good flash blocker (many annoying ads are flash and they use 100% of your cpu and wear down your battery fast. pages load faster with this enabled.)

    http://rentzsch.github.com/clicktoflash/

   (ClickToFlash is nice but if you're wanting to view net art that uses flash you'll probably want to temporarily disable it.)

•••Readability is GREAT for reading articles in your web browser.

   http://lab.arc90.com/experiments/readability/

***These three things have completely changed and improved my web browsing experience!