Do note that Pingdom, unless specifically configured otherwise, counts a successful HTTP request as uptime. If that HTTP request is returning a page saying "our database servers are down, try again later", it still shows as uptime.
You can configure it to send POST data and expect a particular response, but there's no way of telling (other than "yep, that's what we're doing") whether someone's uptime stats are based on that sort of check.
You can configure it to send POST data and expect a particular response, but there's no way of telling (other than "yep, that's what we're doing") whether someone's uptime stats are based on that sort of check.