ERCROSS  Bento is a great concept - poorly implemented. I bought v.1 for it's integration with Address Book because it extend it's functionality as a database while still allowed the core AB data to be shared amongst other Mac apps. However, integration has some bugs. Some of these are fixed with v.2, but Filemaker wants owners of their defective product to re-purchase another buggy second edition at full price. V.1 users have been unable to get Filemaker to commit to at least fixing the bugs in v.1.

Sadly because of their poor implementation Filemaker has left the market wide open for a software developer to offer a true database with Address Book integration. They have a user base who are hungering for such who would abandon Bento in a heartbeat. Bento lacks the basic database functionality that any one who has ever used a database looks for such as the ability to create reports with calculations and subtotals, to be able to customize form fonts and backgrounds, etc. One would have thought that the makers of Filemaker would have known what people expect in a database.

Can some people find it useful, yes just like some still use a pencil and paper. If you are willing to implement a bunch of work-arounds, which really should have been the products name, (iWork-Around) and can be the eternal optimist waiting that some day you'll get the functionality you were expecting after paying for numerous upgrades as there are no guarantees of bug fixes, then this may be the product for you.   
(Version 2.0v2)