So I started learning ArcGIS for Server, in an exercise I needed to answer this question above, sadly I couldn't figure out as to what the advantages and disadvantages were. I have developed a geoprocessing tool that makes buffer around a point feature, then I uploaded that tool to ArcGIS online. Last step was to answer this question. So basically, this tool could already be found on ArcGIS Online, therefore I should be determining what the advantages and disadvantages were of me sharing it again.
What are the advantages and disadvantages of sharing existing Spatial Analyst tools over the web?