If you’ve opened the page in a browser (e.g. Safari), you could use the service “Take Rich Note” to add the contents to the database. But if you’ve opened the page inside DT, you could use the contextual menu command “Capture Page” of course (adding the HTML code, the page title and the URL to the database).
i set a new Shortcut for the Service/New Rich Text Cmd+Ctrl+D (for "DEVONthink") … of course this is only possible in Panther.
Then i mark the content (don’t mark all with cmd+a because this makes often Problems) and push Cmd+Ctrl+D.
Now i have it in my DEVONthink database and need no internet connection to view it. I have also put on “Auto catagorize” (i have a german version, so i don’t know the real english name of this function) and it works fantastic.
Oh … by the way … hello forum - using DEVONthink since yesterday and it think these are my most powerfull 5,7 MB on my iBook-Disk.