Is there a limit on the number of Macs that can use a single 2TB Time Capsule? I am looking at buying a few of the 2TB Time Capsules for our office, where we have about 20 unibody MacBook Pros with 128GB SSDs.

Is there a limit on the number of Macs that a single 2TB Time Capsule can provide Time Machine backup targets to? Does anyone have advice or experience regarding using a Time Capsule as a target for multiple machines?
According to this post on Apple's product page for the Time Capsule, up to 100 machines can use a single Time Capsule. The source of the "100" is not accredited, so it may not be accurate.