Uri Blumenthal writes: > > Let me ask something in return: do you think that > > just the act of signing mail -- with no trust > > roots implied -- could help? My sense is that it > > might in a sow-the-seeds kind of way for some > > later goodness (it's as you say not a solution). > > I too would be happy to hear downsides. > > It might be good - but I think it will be ineffective in > spam-war. Well, "effective" is a relative term. I guess I don't see this as having any ultimate solution; it's an arms race. The question is whether doing so would give enough marginal value in and of itself (which might even be neutral value, but it would be better if it were at least slightly positive) to get us to the next step where we can possibly apply third party vouching, authorization etc to the mix. Thus, my question -- and I think Harald's as well -- is mostly a *tactical* one, not a technical one. IMO, it's the tactics which will allow or inhibit forward progress. Mike