I think the key points are:
In open research there is more potential for loss of control, and the research spreading into unexpected or unintended use.
This dilemma is desirable for researchers, to engage in a wider conversation, yet potentially undesirable, as there are possibilities for unintended change of context.
The process of open research means more transparency built into the research project, releasing selected information before conclusions are reached, engaging in debate along the way, and possibly incorporating suggestions and feedback.
The difference in open research - willingness of others to participate and therefore to get research projects up and running because they are open.
Guerilla and small scale research projects - a very attractive idea.
Compelling - the global network of peers. Excellent way of gathering data and comments to get projects going.