One of the Tabs from the Index lists Tiddlers that are Public as opposed to Private.

In TiddlySpace Tiddlers can exist in one of two states - you can see the state indicated when you are in the Edit mode for a particular tiddler. A blue circle, with white in the centre, signifies "Public", a pink centre, with white around the circumference, signifies "private".

You can Switch the "status" of tiddlers from Private to Public, or vice versa very easily.

You (or at least anyone who is a MEMBER of the SPACE - see Space menu) can Switch the "status" of tiddlers from Private to Public, or vice versa.