They have a lot of nice things to say about Pingdom. The review looks at our alerts, reports and some of our other features as well as the general usefulness of the service.
Here is a small snippet from the review:
The bottom line in all of this is that if Pingdom watches your site, you’ll know that your site is down before anyone else. You’re better able to get ahead of potential issues before they become big problems. And with the detailed reporting you can monitor your up time and help diagnose potential issues affecting your crawling and SEO performance. While it is $9.95 a month for the basic account, trust me when I say that it’s well worth it. We tried other similar services like Montastic and Pingdom is, by far, the best and most accurate. It’s become invaluable.
We like being invaluable. 🙂
You can read the whole thing over at SEOmoz.