The online blog can be used as a pre-task, homework diary or other ongoing blogging facility. Your clients can always ask exactly the questions they want to, in the way that they want to.
Respondents can log on in their own time and complete the tasks whenever they want, day or night.
You can view how recently respondents have logged on, look at their comments to see how they are answering questions, and if needs be, re-word questions to gain further insight.