Yes, there is a thorough discussion on http://realclimate.org. I've not been following it very closely, however, if over 10 years those are all the "nasty" emails that could be found, one would be hard pressed to come away thinking that there is a conspiracy to perpetrate a climate change fraud.
I'm not familiar with the claims of data being lost, but I can assure you that there are plenty of publicly available raw data sets that show the warming over the past 100 years. It is my understanding that they aren't as complete as CRU's because they do not rely on proprietary raw data, but they tell the same story.
I did not know... I'll let the blogosphere know right away.
The "climate deniers" do not claim we are not warming. They dispute the source. Everyone admits warming happened prior to 1940 (1934 is highest recorded by man), then we dropped until the 70's, then went up again.
The Global Warming Swindle shows some very compelling graphs that show solar activity much more closer linked to temperature than carbon dioxide is.
The implication of the GWS is that scientists key in on CO2 because there is nothing we can ever do about water vapour and sun activity.
CO2 only makes up .54% of the gas in the atmosphere and here is its rank in terms of greenhouse gases:
The contribution to the greenhouse effect by a gas is affected by both the characteristics of the gas and its abundance. For example, on a molecule-for-molecule basis methane is about eight times stronger greenhouse gas than carbon dioxide, but it is present in much smaller concentrations so that its total contribution is smaller. When these gases are ranked by their contribution to the greenhouse effect, the most important are:
* water vapor, which contributes 36–72%
* carbon dioxide, which contributes 9–26%
* methane, which contributes 4–9%
* ozone, which contributes 3–7%