I like your comment. Do you have any examples of C# libraries that use the ideas you're talking about? Or even better - do you know of a tutorial or something where I can clearly see the two approaches compared and contrasted?
Contrast that with Microsoft's WCF: http://www.codeproject.com/Articles/105273/Create-RESTful-WC...
Quartz: http://www.quartz-scheduler.net (hint: it's gigantic)
Contrast with
private void ScheduleRepeated(Action task, TimeSpan interval)
{
Task.Run(async () =>
{
while (true)
{
await Task.Delay(timeSpan);
task();
}
});
}