Why sync ACT! with Google? Because then you can use the free Google Sync service to sync data between Google and your phone. This gives you free wireless sync of ACT! contacts and calendar with your phone, courtesy of CompanionLink (a one-time purchase) and Google Sync (free).
Here’s more info about how it works.
Video: How to sync ACT! with Google was last updated August 3rd, 2009 by