I participated in this last year. This year I hadn't heard about it, I didn't realize it was today.
Then this morning, we were at our local Farmer's Market (runs every Saturday morning, it's a HUGE crowd of people every week, it's The Big Thing to do here on Saturdays heh) -- and we saw a booth set up for the local breastfeeding promotion group which ran the event last year.
So of course we had to check what they were up to, and it turned out it was the Challenge! Which would take place right there at the market - yes, out in public in front of EVERYBODY!

There were still a few hours before latch-on, which was good, because DD had dance class to go to in the meantime.
They remembered me from last year -- I had given one of the organizers my email address because I wanted to be involved with the group, but never heard from them. It turns out she'd lost the paper it was written on, and she was so glad I showed up again!
I think DD was the oldest one there, at almost 3yo, and the youngest was just a few weeks.
What was ALSO neat was that it was the largest number of slings I've seen together in one location since moving back here last year. :/ I see them every so often, of course, especially at the market (I might see 2 each time we're there). Aside from a Bjorn or two, there were at least two ring slings (including mine), two pouches, and two mei tais, as well as some kind of buckle tei.
