Is StumbleUpon trying to make the traffic it drives more “sticky”?

Now, with the widgets, publishers will have the ability to embed content that it on another page of their site, giving StumbleUpon users something else to click on locally, rather than nearly being encouraged to leave. According to a StumbleUpon representative:

The widget is a way for us to offer people a better way to see curated content on a specific Web site that other users have surfaced

StumbleUpon’s new tools help publishers stumble upon repeat visits