It's been a while since I installed this gem. I had it on my previous desktop, but haven't gotten around to installing on my laptop yet.
I've been using the inadequate built-in Find for searching for my emails on the Exchange and remote IMAP and local Personal Folder files.
Yesterday, I got fed up when I couldn't find an email for work. So when I got home late, I installed the Google Desktop, fired up Outlook and connected to the Exchange server, and let the laptop site on all night - Indexing.
I woke up and before hopping into the shower, decided to test my newly installed Google desktop to see if I could find that one email.
Within the first search, the 2nd result was what I was looking for.
I may try MSN Desktop Search next.