There sure is. It can be found right here.
Having a quick browse through their most recent postings, they tend to write a new blog post about once per week.
They write about event recaps, some new market releases, business news, new app features, and much more.

About the Author – Hey there! I am a 31 year old male residing in Edmonton, Alberta, Canada. My main source of income is through reselling clothing on Poshmark, with my second source of income being through creating and running numerous websites daily. (Shoutout Edmonton, Shoutout Sudbury, Edmonton Talks News, & Alberta Missing Report to name a few.) I also make helpful Poshmark-related YouTube videos! Thanks for checking out my helpful Poshmark website! If you happen to be interested, here’s my Poshmark Closet.