This provides the graph data in various feed formats.
ex: http://www.trendrr.com/api/feeds/graph?id=376964&return=xml

authentication is optional (will allow you to view graphs that are not public).

params:

id (required)	this is the id of the graph
return	This value specifies what format you would like for the feed Possible Values: xml (Default) an sgs xml feed json returns the feed in JSON format excel returns an excel file