Your contribution will help cover minor costs including domain maintenance, laptop replacements, internet, coffee, and other techie things. In addition to developing the PyShp library for Esri shapefiles, my collaborators and I reverse-engineered the undocumented Esri sbn shapefile spatial indexing format which allows for better integration of open source and commercial technology. I have donated thousands of lines of geospatial code, mostly in Python, to the world which can be found in the GeospatialPython GitHub repositories, the blog GeospatialPython.com, and questions answered on GIS StackExchange. All of this will remain free forever, but your sponsorship adds fuel to the fire!