Briefly, I've not kept up with Swivel anything like as much as I had wanted (largely due to my move out to Microsoft distracting me from many of the more in depth posts which I'm trying to complete - including one about Linguistic Agents). I failed to cover their awesome coverage in Fast Company (pdf). But I'm slightly back on the ball now.
Sara Wood, Swivel's Data Chief dropped me an email about this update:
Today we are launching a new browser-based “Swivel It” button for Google Spreadsheets. The button facilitates uploading directly into Swivel, and it can be dragged-and-dropped into Firefox or Internet Explorer toolbars. Now any time that you have a Google Spreadsheet, you can click on “Swivel It” and the data will be uploaded directly to Swivel.
Sara also reminded me of the graph embed capability - as demonstrated below!
Note also that these graphs can be rendered in a sparkline form. However, it seems that the presentation form is determined on the server and the link is to the graph, not to the final rendered version. Thus, I can't show you both the standard view and the sparkline view as I had hoped!