The following description from Geneabloggers explains Follow Friday:
Follow Friday is a daily blogging prompt used by many genealogy bloggers to help them post content on their sites.
To participate in Follow Friday, simply create a post in which you recommend another genealogy blogger, a specific blog post, a genealogy website or a genealogy resource. Tell us why they are important to the genealogy community and why we should follow.
In this Follow Friday post I recommend Roots and Rambles, a blog by Marian Pierre-Louis. In addition to being a prolific geneablogger, Marian is a house historian and genealogy lecturer. She has presented terrific webinars such as “Brick Walls: Cracking the Case of Nathan Brown’s Parents” and “Researching Your Connecticut Ancestors.” I look forward to reading Marian’s blog posts regularly. Check out her website for some great genealogy writings, and links to her webinars.