Findings:

• ICC
• I.C. Fractal (user)
• ICC Chess Tournament (collaboration)
• I.C.S. Vortex
• ICC Champions Trophy
• DiscoDiscordia IC (user)
• On the Origin of Species by Means of Natural Selection : Chapter I-C
• iC (user)
• IC
• Paradise Regained - Book Ic
• mixing IC and OOC up in the code of computer-based RPG
• -ics
• -ic
• ICS

If you Log in you could create a "ICCC" node. If you don't already have an account, you can register here.