Andrew Kemp <andrew_kemp@pacific.net.au> writes: > However, management is interested in such stats as "The cache saved us > xMb in traffic". Stats are available on how much news was read, into and out of the cache. Although, it's worth remembering that faster news and more groups will increase user demand for news, and decrease demand for other things that compete for peoples time. Econometrics is only as good as the number of dimensions in your model. Cheers, Julian.