It had some letters in its name, a fairly recent new webservice which I found uninteresting when I first found it but kept remembering and wanted to give it a spin now. But I can't remeber the name.

It is like an uptime tester with added functionality, you could poll websites, emailboxes, webservices, etc. and then define a hook that is being executed when a certain condition is met, making automated private mashups for you.

Certainly, as with everything coming from the Valley, I only hit this one service back then, while a number of startups actually are exploring this concept. So links welcome...