Charities that create podcasts — online radio broadcasts — to raise awareness of the issues they work on should stick to one topic per broadcast, advises a nonprofit marketing expert.

“The format is tight, keep the focus that way, too,” Nancy E. Schwartz writes on a blog post on Getting Attention.

Among her other tips: Keep podcasts short when just getting started, outline broadcasts before recording, and make it easy for listeners to subscribe.

Has your organization experimented with podcasting? Was the effort successful? Click on the comments link below this post to share your experiences.