There are some very detailed and thoughtful reviews just getting published covering the use of Office Accounting, Business Contact Manager and the rest of the Office suite for small businesses. Here is a sampling of these write ups:

 http://www.crn.com/software/203103087

http://www.smallbusinesscomputing.com/news/article.php/3711386

http://www.smallbiztechnology.com/avantgo/2007/11/are-software-software-as-service-power.shtml

http://www.accountingweb.co.uk/cgi-bin/item.cgi?id=175535&d=1025&h=1023&f=1026&dateformat=%25o%20%25B%20%25Y

http://www.laopinion.com/negocios/?rkey=00000000000002662210