Randy Gresham <firstname.lastname@example.org> passed on a URL for a Web server that provides stock quotes. You must know the ticker symbol (AAPL for Apple), and quotes are delayed somewhere between 15 and 60 minutes. Various graphical representations of the Dow Jones Industrial Average are available, although none of this information is guaranteed or meant to be used in a commercial situation (and the service will be shut down if it's abused). Kudos to Security APL and Data Transmission Network for providing this free service to Internet users. The basic idea is to use the quote service as a form of advertising for the fee-based services that these companies also offer. Frankly, I think it's a good idea and wish them the best of luck with it. The quote server is forms-based, so Mac users must use either MacWeb or NCSA Mosaic 2.0a. [ACE]
Mac OS X Services in Snow Leopard
Mac OS X Services let one application supply its powers to another; for example, a Grab service helps TextEdit paste a screenshot into a document. Most users either don't know that Services exist, because they're in an obscure hierarchical menu (ApplicationName > Services), or they mostly don't use them because there are so many of them.
Snow Leopard makes it easier for the uninitiated to utilize this feature; only services appropriate to the current context appear. And in addition to the hierarchical menu, services are discoverable as custom contextual menu items - Control-click in a TextEdit document to access the Grab service, for instance.
In addition, the revamped Keyboard preference pane lets you manage services for the first time ever. You can enable and disable them, and even change their keyboard shortcuts.