An industry rule of thumb, verified by USA TODAY through interviews with nearly a dozen influencers, marketing professionals and influencer platform founders, is a baseline rate of about 1 percent of follower counts per sponsored Instagram post, or $100 for every 10,000 followers. That means someone with 100,000 followers might start around $1,000 per sponsored post, while an influencer with 1 million followers could charge $10,000. And some experts called that conservative. Along with pricing structures based on follower counts, CPEs (cost per engagement) have emerged as another way to calculate marketing rates. Engagement is typically defined by interactions with content such as likes, comments, clicks or shares. Engagement rates can be found by adding up all engagements on a post, dividing it by follower counts and multiplying by 100.

Chris Anderson on PR 2.0 - using social media for public relations

The Media Volunteer Project lets people from the nonprofit community share their own media contact information in exchange for access to everyone else's information.

a Google-based custom search engine that searches only blogs related to advertising, marketing and PR

Social media press release templates and more.

Making your Web site reporter-friendly is a relatively simple affair. This guide from Fenton Communications offers best practices for effective online press rooms.

Getting U.S. media coverage of international issues has its challenges, but it's not impossible. This guide offers these 10 tips to help you cross the divide between events over there to the news over here. From Fenton Communications.

Should you ever freeze out a reporter? From Philips Media Relations.

Includes detailed guidelines for the editorial requirements of the top 100 U.S. newspapers

Putting a human face on your issue for the media - from the Communications Consortium

A guide for nonprofits from the W.K. Kellogg Foundation

From the Health Communication Unit, University of Toronto