InterNews Caveats -- A number of people wrote in response to my InterNews review to note that it isn't as fast as Nuntius and cannot display (though it can save) text after the first 32K, which causes problems with long messages such as the Info-Mac Digest posted in comp.sys.mac.digest (but TidBITS sneaks in, since it's almost always less than 32K). A few bugs were flushed out by the release, and Roger Brown said that he's working on fixing them, so keep an eye out for an update this fall.
Turn Off Filename Extension Warning
In Leopard, Apple fixed an annoying aspect of working with the Finder in Tiger. Previously, if you changed a file's extension, the Finder prompted for confirmation. But since no one has ever accidentally changed a filename extension, Apple thankfully added an option to turn that warning off in the Leopard Finder's preferences. Choose Finder > Preferences, and in the Advanced screen, deselect Show Warning Before Changing an Extension.