Sachs’s ever-ready eye is behind the lion’s share of entries: her “Foudroyant” response is a particularly potent rendition of the kaleidoscopic Coney Island film. David Gatten (“Rete”) and George Kuchar (“Pelagic”) contribute, respectively, a city symphony from leafily obstructed vantages and a poignant and peculiar visit to a Bronx funeral home. Beyond its homepage’s elegant interface, the project is meant to stand as an ongoing exploration through participatory blog threads and collaboration with other online media forums. Welcoming work from any and all who visit, the site (co-produced by artist/web designer Susan Agliata) aspires to be a perpetual atlas in progress, a sensorium of ever-accumulating coordinates. Abecedarium: NYC is rife with pockets of Web wonderment, serene handmade meditations, and, perhaps most intriguing, yet-to-be-realized potential.