My guess is that it won't be long before Microsoft and Netscape adopt many or all of Domino's features. Right now, they're working in the direction of where Notes has always been. Whether or not you decide to make the move to Domino and Notes, the Internet's future is not in pushing and pulling-it's in web applications and servers that dynamically create custom content. The templates enable quick development of the most popular intranet applications. Notes databases keep objects organized and allow for easy reuse.
Domino is slower than many web servers.
Notes does not currently support frames and some of the other HTML tags supported by the leading web browsers. The development environment requires web developers to become familiar with a different way of developing web applications. This is Software Development's rating box. The product is buggy and could suffer from poor performance and an inadequate feature set. Using this tool will set your productivity back.