Microsoft has released Skype 6.19, which adds support for using VoiceOver to select recent searches from the Add Contacts search field. The update also fixes several reported crashes that occurred when sending and receiving files, fixes a crash that occurred when waking from sleep, and ensures that older Mac desktop machines successfully return search results when searching for messages. (Free, 41.9 MB, release notes)
Mac OS X Zip Expanding Utility
Firefox (and possibly other applications) may ask you what you want to do with .zip archives that you download from the Internet. If you want to expand them with Mac OS X (rather than StuffIt Expander), you may be unsure of which application actually does the job. You're looking for Archive Utility (in Leopard and later) or BOMArchiveHelper (in Tiger). In either case, the application is stored in Hard Drive/System/Library/Core Services/. Don't move it from there, though, or you'll confuse matters.
Set up short abbreviations which expand to larger bits of text,
such as “Tx” for “TextExpander”. With the new custom keyboard,
you can expand abbreviations in any app, including Safari and