The “Summary” feature of OS X really is like a work of voodoo. To use it, highlight some text in your favourite Cocoa app, like Mail, Safari or Camino, then go into the application’s Services menu and choose a level of summarisation (between 1 and 100% of original text length). In a few cases, the summarisation was eerily accurate and I don’t think I would’ve done any better.
This service receives little fanfare and is certainly one I’ll use more when I come across very long articles where I need to get the gist of it but haven’t got time to read it all at that very moment (where it makes its way into my del.icio.us bookmarks… and probably never gets read completely, hrmm)
So that’s my tip for the day!