Entering negative values on weight loss form is not very intuitive.
I find the weightloss interface a bit non-intuitive. Even though it says weightLOSS at the top entering a weekly value as a for pounds you wish to lose as creates a weight gain scenario. It was apparent to me that I needed to enter a negative number, but it was something I had to think about. It would be more appropriate IMHO if you provided some radio buttons or something to change from weight loss/gain
Admindreeves (Cofounder, Beeminder) commented
We do like having the full generality. Bethany talks about this in http://dreev.es/howtobee for example.
You're right that that's confusing, especially when first creating a weight loss goal. But if we made it smarter then it would be confusing later if you wanted to actually have the road slope up! Tricky...