Last year I started working on a project based on the question of how people see different online communication tools as affording different levels of intimacy: how they feel confident disclosing private information to their peers in different manner over different particular tools.
My first take on this question was to present a poster at the Memphis Information Architecture Summit, where I asked poster viewers to participate by marking their opinions of how they use these tools and how they see them used by the people they know. My poster includes images and captions taken from these same tools to depict the whole range of self-disclosure we can see on them, and I did not judge their disclosure level, leaving that to the eye of the beholder. These images and captions should evoke the participants to reflect on their own behavior and that of their online contacts.

There were about 30 respondents - they were variable across categories - and I later started transcribing their dots for analysis and some patterns start to emerge:

I had previously sketched a map of how the results could be displayed, and this included some of my intuitive approach of what I might find. I later composed the following chart by averaging the participants’ dots and placing them next to my predictions.
In the final chart, each platform or tool has two horizontal bars that depict their range of disclosure level, from the most intimate type of disclosure they support next to the axis, to the most open/formal/public types of discourse on their outer edge. Each blue bar represents the range covered by the averaged red dots to the averaged green dots for each category. The yellow bars show what I had initially drawn that could be found.
Looking at the results

I had expected blogs and flickr to reach the highest levels of public discourse, as these are technically public (by large percent) and easily reached via search engines, sometimes even favored by them. I had also expected to find a wide range on these, as this is what I’ve observed over the years. The range covered by blogs and flickr was not as broad in the participants’ opinion as on my previous guess.
I had anticipated Facebook to show up as a system that is rather private in nature, as studies have shown a growing number of people who block their profiles to public access, and the vast majority of people with whom I interact with on it have closed profiles and tend to share lots of family moments, so I naturally expected it to be seen a lot more private than blogs, which also in large proportion are not password protected. However, my respondents marked Facebook on a mid-range of intimate disclosure.
Twitter shows a big difference as when I drew my chart I was mostly thinking of chatter between friends, but apparently my respondents were thinking of a much more public, professional-strategic use of this tool.
Email appeared as the most flexible tool in the eye of my respondents, and I should have probably anticipated this more carefully.
A big surprise for me was to see how flexible these participants found IM to be, as I am mostly used to using it for personal matters, and my guess on these results show that these participants are accustomed to using IM in professional settings as well.
Lessons learned
My method for allowing people to mark their impressions on the poster was very informal and confusing, this ranges from the way they are asked to think about the issue to the way in which they had to mark it down on the poster with two colored pencils, one green, one red.
Besides the tactical difficulties of imagining this and plotting it on the chart, there’s a lot of variation on how people perceive their discourse to be intimate/public, in order to get proper measures, this will have to be operationalized in a much more formal and straightforward way.
What comes next
I’ll now go on to build a proper survey to measure the usage more closely. It will include some demographic screening focused on usage experience, and some measures of self disclosure as a personality trait, as I expect people’s personality to have a strong influence on their levels of disclosure. Also, I will be asking about particular behaviors, not just reflection on how they judge their own disclosure.