Use Firefox instead
The following add-ons might be of interest to you
4: Ad Block Plus
6: HTTPSEverywhere (from EFI website)
Also OnyX and CCleaner for Mac.
And for almost the best, noting beats a virtual machine OS that you revert back to a earlier snapshot to clear anything and everything.
Still your sites being visited are recorded by your ISP as well as your Google searches, only a proxy can assist there somewhat.
For the cookies issue, you may find the Firefox browser more user friendly.
Always good to have a backup browser installed regardless.
ds, I am trying to keep my Macbook on Apple approved apps. Besides, I have had some bad experiences with FireFox. I believe it is what it is. After Gates(Microsoft Windows) and Google and Apple had obsreved how Facebook gets away with ignoring their customer's lack of regard for privacy it has gotten really bad. They all want to track and record everyone's history. Also companies use of the internet as a marketing tool has, in the eyes of google, microsoft, apple and others become acceptable. Especially since so many people have gone from wtching TV to using the internet. But thanks anyhow. Your suggestions may provide some relief to me in the way of privacy. I will check some of those apps out. There was a big meeting of computer and other hardware/software companies involved in a big change over to UNIX based operating systems. Microsoft was excluded from that meeting.
Using safari 6.0.4 I can't repeat what you found - block cookies always, blocks all cookies. Sure, the 'Details' button reveals cache.local storage & plug-ins, but no cookies.
Same thing when I try Private Browsing while Cookies : Block : 3rd parties & advertisers is used - no extra cookies are added after Private Browsing is started.