Also yesterday the American Business Media delivered their Year-End-Data (December) of BIN (Business Information Network) on 4 revenue platforms
+ 15.0 % Digital spending, 2010: 4.6 bn USD
+ 6.7 % Data spending, 2010: 1.6 bn USD
- 0.4 % Total, 2010: 23.8 bn USD
- 1.3 % Print advertising, 2010: 7.4 bn USD
- 6.4 % Tradeshow spending, 2010: 10.2 bn USD

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The details [pages / value] broken out into BIN's 22 industry categories are here (PDF)
Interesting to to look at the revenue share by platform
42.9 % Tradeshows (down from 45.6 %)
31.1 % Print (down from 31.4 %)
[without tradeshows about 33.8 %]
19.3 % Digital (up from 16.7 %)
[in the Germany, without tradeshows 13.1 %, incl. about 6 %]
6.7 % Data (up from 6.3 %
Source: ABM