I looked at it. Initially when I say the webapp, I was stoked and I signed up right away. The I went to the website and saw the fine print. I'm not going to use it if I have to pay an annual or monthly service fee.
I'm looking for something like that, where my Wife can make shopping lists on her computer and I can stop by the store and pick it up. But for a service fee? No thanks. She can just text message me her lists for free.
A one time $6 app purchase, maybe. Sorry I'm a cheapskate.