Brutus,
Your conservative approach is quite safe. This would avoid the potential etiquette issue. However, in my view (not a legal opinion of course), pushing the envelope a bit more by posting the entire article over here would not make SH go ballistic, if credit is properly given to SH. It's a delayed release of the info from SH to non-subscribers, hence the etiquette of copyrights should not be an issue. Besides, a wider disemmination would give SH some free advertisement of its service. The etiquette could be a potential issue if SH posted its work on this site without AGO consent.
Your approach is fine. It serves the purpose. AGO folks can just read the post on the other site.
JMO
goldhunter