What exactly does the idea of gems mean for the .NET world?
.NET is not a scripted language. There will be no uncompiled gems at this time (who knows that the future holds). So what we have left are binary gems. DLLs in other words. Now, .NET is very particular about referenced assemblies (the assembly version must match), so when it comes to adding dependencies, you can only say = (equal to), not >= or <= versions. You as a developer creating gems would release a new gem PER release of your product. Whenever you upgrade a library that you are using, you would update the gemspec to that new dependency version as well.