To compile the list of 150 top agencies, BtoB surveyed agencies in its database through an online entry form that was sent out in early December. The Top Agencies report includes four categories: Small agencies (revenue up to $10 million); midsize agencies (revenue between $10 million and $99.9 million); large agencies (revenue of $100 million and up); and interactive agencies. The finalists in each category were selected based on percentage of total business that is b2b, revenue growth, new client wins, innovative work and expanded service capabilities. Winners of awards last year were not eligible to win a category this year but could be named as a runner-up or receive honorable mention.