O'Dwyer's today released its annual ranking of 82 technology PR firms led by strong gains from Edelman (up 15% to $101.9M), APCO Worldwide (up 55% to $24.9M), and Atomic PR (up 37% to $8.9M), among others.

MWW Group debuted at No. 12 with nearly $6.9M in tech revenue last year.

Amid strong performances reported last week in the overall O'Dwyer's rankings, firms said digital and social media efforts played a key role in the industry's recovery in 2010.

Top 10 are listed below. Full table of high-tech revenue for 2010 is posted here.

Technology and Industrial
Public Relations Firms & Agencies

[listing] -- Listing for each firm in O'Dwyer's PR firms database
 2010
Net Fees
1.Edelman [listing]
$101,936,429
2.Waggener Edstrom, Bellevue, WA62,669,600
3.Text 100 Global PR, New York [listing]
46,700,000
4.APCO Worldwide, Wash., DC [listing]
24,948,000
5.Ruder Finn [listing]
15,500,000
6.Schwartz Comms., Waltham, MA [listing]
10,840,645
7.Qorvis Communications, DC [listing]10,458,650
8.Atomic PR, San Francisco [listing]
8,889,000
9.The Hoffman Agency, San Jose [listing]
8,200,000
10. Horn Group, San Francisco [listing]
7,500,000