Board Thread:The Quarters - Q & A/@comment-26076679-20150301095024/@comment-24150802-20150301103329

Task Value tells you how the numbers relate to the task colours. In brief, very negative = very red, very positive = very blue.

A very negative To-Do means that they waited several/many days before they ticked off the To-Do or they never actually ticked it off at all. A To-Do with a positive value greater than 1 has had a skill cast on it to make it more blue (this isn't cheating; it's just what some skills do). You can't tell much from To-Do values; instead you need to look at whether the To-Do was actually completed or not. Unless there's a requirement in your challenge for completing To-Dos quickly, the value of the To-Do is irrelevant. Does it matter if they ticked it off as soon as they joined the challenge or after many days? If it doesn't matter, ignore the To-Do values, just look for whether the To-Dos were actually done.

The Dailies' values are much more relevant. A large positive (blue) value means that they ticked off the Daily very often - these are your potential winners, if they also completed the To-Do (regardless of the To-Do value). A large negative (red) value means they didn't do the Daily often at all - these are probably not your winners, no matter what the To-Do's value or completion status is.

But note that people can cheat in challenges. If someone has not ticked off the "write a letter" To-Do, or did not tick it off until many days had passed (a very negative/red To-Do) and yet they have a very positive/blue value for the Daily, it might indicate that they claim to have mailed a letter every day but without having written a letter for most/all of those days. Or it might indicate that they just forgot to tick off the To-Do even though they did do it as soon as they joined the challenge. :)