You need to fix the bug where I can view other people's tasks just by changing the ID in the /task/show/ URL. You should also add a "send feedback" form so people can report this kind of bug in private!
Everything on the site also seems to be cross-site scriptable, so watch out who's tasks you view; there's a Rails default that filters tags from output by default, which he should be using.
I still use it when doing consulting, so it does what I want, which is creating an ordered list of things, and keeping track of time spent on them. Indeed, this weekend I've been working on a system tray program that will make that process even easier...
The real question is - why did you do this? Not criticizing, because my startup is also list related, but why exactly did you write a todo list application?
Hey everyone. Sorry I've been ages responding to this, I've been away for some time. I've integrated each piece of feedback on this page, thank you all for your input. The app was a quick way of picking up Rails, and I have worked on several larger projects since. Some of it is quick and dirty as I do this in my spare time, and I now mainly use it to test out new ideas. The casual 'key' based authentication was a concept I wanted to try out, and a to do list is a good opportunity as the data is rarely sensitive, and the risk of someone deleting/marking a task complete is outweighed by the convenience of an authentication method that allows for the bookmarking of your to do list (louislouis - I was also using a simple text editor for keepign lists! Now I use my own app to keep track of all tasks from my clark-kent job, personal life, startups, small web apps etc.). Thanks again!
I really like the idea of having a zero-friction sign-up.
Overall I like the design, but switching between categories could use a little more prominence, as could making the site easier to bookmark. (I did notice the little link on the right, eventually)
Props also for steering clear of the 1 2 3 step deal that most web 2.0 software seems to be doing now.
Apart from instant signup, why would anyone use this instead of, say, Ta-Da List? It's much harder to create a new item in your lists (I have to find and target the top right side of the screen) than in Ta-Da.
I think you need to do something about the colors. For me green does not mean its a low priority item. Maybe use bold red for priority, bold black for medium, and regular font for no priority?