Some of the bad things:
Overall this is the Inq's verdict:you can't save a tab group as the home page Very boring look Inability to save changes to preferences Resizing a browser window doesn't work that great It's slow Font handling on a CRT display is extraordinarily bad Eats a lot of memory, twice as much as Firefox
So why has Apple produced what is – at the moment at least – possibly the most crap browser on the planet? The clue's on that unavoidable start page and it's called iTunes. Apple's future is based on selling content, not computers.Additionally there are also security concerns. Within hours after the release security researchers already found three holes in the browser:
One security researcher Avi Raff called out Safari's statement "Apple's engineers designed Safari to be secure from day one." Raff was able to find a vulnerability within three minutes using publicly available fuzzing tools. Raff found a memory corruption error that could allow an attacker to insert malicious code on a Windows machine.