Concer.ning

(use xn_auth=no if your app doesnt support cockies+redirect)
concer.ning.com/count
Returns the number of concerns for a given url.

Arguments:

url
the url of the page to consult (url encoded)
fmt
the format of the output. accepted values: text, xml, html(default)

Examples:

concer.ning.com/view
Returns the list of concerns for a given url.

Arguments:

url
the url of the page to consult (url encoded)
fmt
the format of the output. accepted values: rss, monkey, ff-ext, html(default)

Examples: