I think that information would really be useful when evaluating a service.
Very interesting suggestion. We've considered it in the past but feel it would then unfairly penalize newer services - unless we also added an additional column for 'Date Service Started'.
The good news is we will be redoing this page to make it easier to sort through in the not-too-distant future. We'll definitely keep your suggestion in mind when we do.
Customer support service by UserEcho