Testing is Good for Usability

The scenario: I selected "unsubscribe" on an unsolicited e-mail. A page loaded with the form below. After selecting "no" on both options and choosing "Submit", I got this error.

Did it again; same error. Testing is good for usability.

Über-usability

So, if your remote usability testers can't understand the logistical aspects of connecting to your remote usability study (technical or otherwise), will they really be in the right frame of mind to participate in your study?

Pay attention to the usability of the logistics and communication around your study.