Ah gotcha. Thanks!

For some reason I never thought of writing them for enums, though I use them for interfaces all the time. Can you give an example where an extension method for an enum would be useful? Can't think of any myself off hand.

I use BitBucket and CrashPlan for this. BitBucket is free (assuming you're happy with Git or Mercurial), and CrashPlan is between 4 and 6 bucks a month depending on whether you pay monthly or annually. This assumes you have nothing stopping you from using cloud services, of course.