People are developing Internet expectations and a professional web presence is one of those expectations. Take a hard look at your web site and compare what it does to what you want it to accomplish. A major revision is probably in order. There's Gold In Your Networks . Most of us do not do a good job of capturing or mining the information we have about contacts.
Address books get out of date.
We have a collection of business cards of people who we no longer remember. We can't remember our last conversation with a client, her birthday, names of children, et al. It's not only embarrassing, but it hampers our practice. In a sense, this is a subcategory of knowledge management. Contact management turbocharges your address book.