We think that a repository with too much noise isn't so useful. When you squash you should use common sense and aggregate the commit comments as you see fit.
As I mentioned in an earlier comment, that's the beauty of giving the power to the community to decide what is interesting to them. I wouldn't describe SecondMarket as a staid, conservative company, we use amazing open source technologies such as Solr, Scala, Akka, mongoDB, etc. in a very agile environment. We also like to think we are changing the way in which the financial markets are working. However svn was one technology we were stuck in the past with and we wanted to share that making such a basic change has made our life better.
That's the beauty of giving the power to the community to decide what is interesting to them. There seems to be a lot of people using older source control solutions and for one reason or another haven't made the move to use a better solution. That's what inspired me to write this post in the first place. We made the move and it improved our lives and I simply wanted people to know about it.