While connected to one Mac from another on my local network via screen sharing in the Finder (not iChat), I tried to use the Edit » Send Clipboard menu item to copy and paste the text from a local Script Editor document into a Script Editor document on the remote Mac. For some reason this did not work -- the text would not arrive in the remote clipboard (still have to figure what is wrong there). So I tried the the next best thing, not really expecting it to work.

I selected all the text in the Script Editor document on the local Mac, and dragged and dropped it over and into the Script Editor document on Remote Mac ... and it worked! (Dragging text also worked from the remote Mac to the local Mac.) So I quickly tested other dragging operations.

It seems most text from various applications will drag over in one form or another to a text area on the other Mac. And does not have to be to or from the same app on local and remote. A couple more quick examples:

• You drag text to create text clippings in the Finder.
• In Safari, you can drag the URL in the address bar to the remote Safari address bar, and it will load. Or drag it to the desktop as a .webloc file.
• Drag a URL that links to a download file straight into the Safari Downloads window to download it.
• TextEditor.app text drags to most places.

Have fun!

[robg adds: You can't drag and drop a file, but this is very useful for text.]