Mac-using Web developers can test their pages for color dependence by viewing pages in grayscale. Here's how you do that in Mac OS X:
Open System Preferences and select the Universal Access panel
Select the Seeing tab.
Click on "Set Display to Grayscale." Ta da!
View the pages in Safari or another browser. Change back by repeating these same steps to reset the display.
This technique can also be used by application developers to ensure their apps meet Apple's Human Interface guidelines for color dependence. The Universal Access settings are actually quite useful beyond simply enabling access by people with disabilities.
If you have "Always show tab bar" enabled under the Tabs section of Safari's preferences, you can Control-click on the last open tab and close it through the contextual menu, leaving nothing but a huge, brushed metal window. You then have to open a new tab if you want to resume browsing Websites.
It's completely useless (at least as far as I can tell), but I found it interesting nonetheless.
[robg adds: I would agree that it's completely useless, but it is kind of odd to see!]
I use iTunes 4 and publish some of my playlists via network and internet. The protocol is named "daap" (Digital Audio Access Protocol) on port 3689/tcp (see previous hint on passing it through your firewall).
I type daap://my.host.name/ or daap://my.ip.number in Safari and hit return. Safari launches iTunes and opens up the shared list. I have collected a lot of that kind of bookmarks now, organized them in a folder called "musik" and put the folder in my bookmark list. So I have fast access to all non-Rendezvous music sites.
It was posted in January that you can open Finder folders in Safari. This is kind of a given, but it also means you can make a folder of bookmarks to places on your hard drive in your bookmarks bar, and command-click it to reveal all those places separate Finder windows.
If you miss Camino/Mozilla keyword bookmarks in Safari, you might find this useful. Take the following template, change a few things, and drag it to your bookmark bar. On a keystroke (Command-digit, where 'digit' is from 1 to 9 for the first nine bookmarks), a dialog will pop up, you can enter your query/text, press enter, and voila! Pseudo-keyword bookmark! Here's the generic template:
Where +q+ is a stand-in for the %s one enters in Camino keyword bookmarks. You can then populate your bookmark bar with icons and run keyword queries in fewer keystrokes then on Camino.
Normally I have Safari set to open a new window when I click a link in Mail or some other external app; otherwise the page I'm reading gets overwritten. With the advent of tabbed browsing in Safari I was really hoping for Safari automatically creating a new tab in the same window, rather than open a new one, but it didn't seem to be in the Tabs panel of the preferences.
The trick is to set the option for "Open links from applications" to "in the current window" within the General options, with tabbed browsing activated. Though it doesn't explicitly say it anywhere, when set up like this, Safari creates a new tab in the same window for each link clicked in another app.
[robg adds: This seems completely non-intuitive to me, but sure enough, it works as expected! I had left the setting at "New window" to prevent over-writing what I had already opened; changed it and now links open in tabs ... cool!]
By accident, I clicked a link in Safari instead of command-clicking it to open it in a new tab. However, whilst it was loading, I command-clicked the link again, and it stopped loading in the current tab and opened in a new tab instead.
[robg adds: I cannot duplicate this behavior, though the author has confirmed it, and it works on a friend's machine. I'm not sure if it has to do with the speed of the connection or something else, but it simply doesn't work on my machine...]
Don't know if anyone was aware of this, but I think it's clever. On web pages that open links in new windows (or tabs), you can drag the link to the location bar to make it open in the current window (or tab). Good for when you're done at a site and don't want to open yet another tab.
Just accidentally ran across this. If you Command-Click the "Bookmarks" menu and then click the bookmark you want to open, it will open in a new tab. However, if you just click the "Bookmarks" menu and then Command-Click the bookmark you want to open, it will open in the active tab/window. A little confusing to describe, but basically, Command-click the Bookmarks menu to force the bookmark you are about to select to open in a new tab.