It appears, however, that ClickToFlash doesn't work on Safari anymore: http://clicktoflash.com, and the general "ClickTo" plugins don't work: http://hoyois.github.io/safariextensions/clicktoplugin/: "Due to Apple’s new development policies, version 3.2 is the final version of ClickToPlugin." That's a huge backwards step in usability IMO.
