There are many GIS related blogs - here are a few - some are now no longer being updated however:
- GIS & Agent-based modelling: https://www.gisagents.org/ - Andrew Crooks (GMU)
- GIS Geography Wide-ranging site covering GIS Analysis and related topics: https://gisgeography.com/
- Wide-ranging blog with focus on 3D/Virtual Earth/Google Earth modelling and happenings: https://www.ogleearth.com/
- Google's maps blog: https://blog.google/products/maps/
- ESRI Blogs: https://www.esri.com/en-us/news-publications/newsroom/blogs
- Geography Realm (formerly GIS Lounge) - GIS community and news site: https://www.geographyrealm.com// - edit by Caitlin Dempsey Morais and others
- Geospatial World - Magazine and News/Blog site: https://www.geospatialworld.net/blogs/ - Commercial Publication site
- Geospatial ramblings blog: https://anitagraser.com - Anita Grasser
- Carto blog: https://carto.com/blog/ - Commercial web services site
- Wide ranging Geospatial site: https://geoawesomeness.com - Edited by Aleksander Buczkowski
- GISScience blog (now re-directed to ESRI Science): https://www.esri.com/en-us/about/science/overview
- EIJ: https://eijournal.com/ - Earth Imaging Journal
- Reddit GIS community area: https://www.reddit.com/r/gis/ - Generic media facilitator site
- Digital Urban: https://www.digitalurban.org/ - Andy Hudson-Smith (CASA)