Thanks for the feedback/suggestions.
Bit of background:
The concept is indeed inspired from our collective experience of doing retrospectives in agile work environments. We think the process is very useful from both an individual and team perspective and we want to encourage more of it. A lot of the time though, the data collected at retrospectives is lost (written on sticky notes etc) and not stored for later use. From an individual, and possibly team, perspective this is something we are interesting in addressing.
I can't speak for anyone else but weeks just go by and I rarely remember back to some of the positives and negatives I had from 2+ sprints ago, nor do I remember if all of them were effectively addressed.
Retroospect, in its current iteration, is an attempt to give some way to record your personal feelings towards things that usually feed into the retrospective process.