I don’t know if this is too old to reply to, but…
We were under the impression that count-url could be used to remove the query string from the url, so that we could share a URL with a campaign code in order to count how effective this sharing is at directing traffic back to our site.
See this page: http://www.edweek.org/tm/articles/2013/11/05/ctq_bohstedt_mindfulness.html
The tweet button results in sharing this URL:
I would expect that your common tracking codes would include SiteCatalyst campaign code variables “cmp” and “intc” - what could be more common?
Here is our anchor tag with various attributes from your docs:
So we expected that any page with the counturl as the base would be counted in the same tweet button count, including cmp=SOC-SHR-TW as well as various other querystrings that might be added for other reasons, so especially ones with and without the cmp parameter would be counted together.
Various querystring parameters after the domain/path url seem to give the same tweet button count, but I’ve heard reports from my editors that they are undercounted.
Also, I don’t think we have a link rel=canonical tag in there, is that something we should add? (we are looking at this for other reasons already.)