I am a user of many Boost libraries and far from a C++ guru, so my comments are from that perspective. * What is your evaluation of the design? It is very flexible, it is easy to modify one's usage of it and not too hard to use. It has been very useful for me. * What is your evaluation of the implementation? It generates some compiler warnings that should be eliminated. Other than that, I have not run into any serious issues. * What is your evaluation of the documentation? It is quite thorough. It takes a little more digging than ideal to get started right out of the box. That is just a question of organization, all the necessary content seems to be there. * What is your evaluation of the potential usefulness of the library? I needed exactly this functionality, which is quite fundamental to many kinds of application development. I looked first to Boost for a library and was somewhat surprised not to find one. I was very glad to be able to be able to use the pre-Boost version. * Did you try to use the library? With what compiler? Did you have any problems? I have used both v1 and v2 of the library with Visual C++ Express 2005 on Windows and gcc 4.0.1 on OS X. Other than the compiler warnings mentioned above, no problems. * How much effort did you put into your evaluation? A glance? A quick reading? In-depth study? I would describe myself as a light user of the library. I have used it for a single logger with multiple levels and multiple destinations, probably a very common use case. * Are you knowledgeable about the problem domain? No, other than knowing roughly what I wanted. My logging in the past has been done via home-grown ad hoc techniques. * Do you think the library should be accepted as a Boost library? Yes. Bruce Sharpe