In days of yore (just after they invented the wheel) the web was the web (or the Information Superhighway or something) but then the distorting mirrors of Facebook, Google and Twitter came along and started to break things. So these days the trend is towards something called the IndieWeb which helps individuals be individual outside the labyrinth of the social media silos.
The new Safari 4 beta refused to launch for me. Plug-ins are the usual suspects with browser failures. I was using the wonderfully useful Glims and a quick search of the Interweb revealed a couple of lines to paste into the Terminal….
sudo rm -rf ~/Library/Application\ Support/Glims/
sudo rm -rf /Library/InputManagers/Glims/
A quick Restart and Safari 4 is working – this very post is coming from it 🙂
If you need to get back to version 3 there is an Uninstaller on the Safari 4 [W:.dmg] which will put you back to where you were.