In a recent post, John Boyer explained that if you want to get access to new B2C and G2C market opportunities, Lotus Forms is the way to go.

Boyer started by stating it is possible for Domino to have a broader reach to all web users without a client-side installation.  The interactivity of XForms are combined with the high precision presentation layer of XFDL for the client side experience.  But, the Lotus WebForm Server is used to convert that to HTML and AJAX that is understood by your browser.  The result is the XML data processing and web services from Domino servers are extended out to the webtop.

Yet, if you happen to have the Lotus Notes client platform installed, the Notes replication capabilities can be brought to bear for when a user needs to work offline.  You can also use the Lotus Notes Composite Application Framework to create mashups with Lotus Forms and other application components.  Whether you use the Lotus Forms viewer or Lotus Forms WebForm Server to render a Lotus Form in Notes application component, you need to access a running Lotus Form using an API.  This gives you the ability to push data from other components, and also push changes from the Lotus Form.