This is one of the most active GIS users platform I am aware of, with a large user base.
I have prepared a personal portfolio for Spatial Data Visualization, showing my skills and projects for which I would like to get some feedback/ suggestions.
GIS and mapping being a comparatively niche area of expertise, it is difficult to find a common platform of experts to ask for feedback/ suggestions. I feel this site as a part of GIS Stack Exchange is one of the best option for the same. However, please feel free to close my question, if it is off topic.