You can see an example Snipperoo widget - my Space Browse viewer - at the bottom of this blog post, using this codeline:
Note that blogger will not let you place this codeline within a blog post - it has to be in the template. I have code the template so that the Snipperoo widget only shows when the specific blog post is shown, as follows:
<b:if cond='data:blog.url == "http://chriscant.phdcc.com/2006/09/snipperoo-widget.html"'>
To make a Snipperoo widget, register for their beta program. Make a new panel with dimensions 300x280. Make a new module. To make a Space Browse viewer widget, use this widget code:
<iframe src="http://www.spacebrowse.com/gadget/SpaceBrowseViewer.aspx?Caller=SN" frameborder="0" scrolling="no" style="border:0px;padding:0px;margin:0px;width:100%;height:240px;"> </iframe>
The above widget code can be customised as described in the Space Browse viewer mashup guide.