Attendance allows you to take and keep attendance records. Its main intended use is for teachers to keep track of records for their classes, but it can also be used for meetings and group gatherings. The attendance statuses are completely customizable.
Via @pcwoessner on Twitter. Great development of Digital Citizenship/Internet Safety resources. He has combined NETS-S, Ribble & Bailey's Digital Citizneship in Schools, iKeepSafe C3 Matrix, Microsoft's Digital Citizenship & Creative Content, and SimpleK12's Protecting Students in the 21st Century.