Prior to even upgrading to Mac OS X 10.5.3 I had heard about this feature, from my co-worker Kyle Slattery on Twitter, that you could sync your Mac OS X Address Book to your Gmail contacts.
"Sigh, I was excited about Google contact syncing in 10.5.3, but it turns out it's only for iPhone and iPod touch users. Lame." -- Kyle Slattery on Twitter.
I didn't care too much about this at the time because, well, I have an iPhone and I figured I'd have the feature once I updated to the latest version of Leopard. But then I got to thinking. Why would Apple, or Google for that matter, want this feature to be limited in such a way? Turns out, even the daring John Gruber thought the same thing.
I have no idea. But such as limitations are, someone took the time to figure out a way to hack it. And so now it is up on Lifehacker and all of you out there without iPhones and/or iPod touches can rejoice.
Source: Lifehacker: Enable Google Contact Sync Without an iPhone or iPod Touch.