As cofounders Nikki and Darryl field questions, a brusque, businesslike tone dominates the group's chatter.
Immediately, he brings on another group of chattering girls, two of whom (Zoë Bell and the fast-talking Tracie Thoms) are movie stuntwomen themselves.
I donned waders and, with the aid of my wading staff, positioned myself in midstream, holding back on casting until a happy group of chattering, river-running canoeists had passed.
I should explain that if you grew up in Canada, as I did, public radio was not the middlebrow reading group for chattering-class shut-ins that it is here.
Barely a third of the electorate bothered to turn up at local elections that consumed the British political classes; a group whose chattering increases in volume as the chamber they inhabit grows ever more insulated from the rabble outside.
People in groups on chatter can also collaborate on files like photos, documents, spreadsheets.
Now users can create sub-Groups within Chatter collaborate around topics that they are interested in.
Tourists are still posing for photographs with their families but are fast being outnumbered by groups of chattering fashion students who have gathered to watch the autumn/winter 2011 Burberry catwalk show which – for the first time ever - is about to be beamed live on to the giant billboard screens (pictured below).
But in one important way this is not a typical Westchester play group: the happy chatter has the long, flat accent of Australia, with a sprinkle of New Zealand and Scotland.
Her group monitors online chatter among self-described active-duty warriors serving overseas and reports it to military officials.
