Google Watch

Results:

Bing: Climate-gate = 6,300,000 results.
Climategate = 1,090,000 results
Climate gate scandal = 1,290,000 results

Google:14,100,000 for climate gate.
3,540,000 for climategate
1,240,000 for climate gate scandal

Yahoo:36,300,000 results for climategate
43,100,000 results for climate gate (Search Engine Top Score)
5,200,000 results for climate gate scandal