In fact, there are more than 500 David or Dave Harts in the United States alone. This Dave Hart lives in Redmond, Washington USA and is the son of Nancy and Harry Hart of Maryland. I extend my sympathies if you were looking for another Dave Hart.
As an inadequate parting gift, click here to see some of what your browser sends to sites you view.
If you own Windows 2000 and work with text files, you should play around with the windiff.exe utility available as part of the separately-installed Windows 2000 Support Tools. Here's a simple example of its comparison of two versions of a DNS zone file. Note the graphical representation of the relationship between the two versions on the left side. To install these programs, run \support\tools\setup.exe from the Windows 2000 CD-ROM.
Check out www.hartbrothers.com too, another site Dave has a hand in.