I use Trello do manage my personal to do list at work and find that it works far better than pen and paper. I have no idea what it's geared towards but for me it works great as a single person tool.
Also, Trello is really easy to just close, a paper you'll have to hide it manually, going analog sometimes is good.
Funny I find I have the exact opposite 'problem'. Trello is always there on my bookmark bar on every computer I own, one click away from viewing anywhere I happen to be. On the other hand I tend to lose any paper to do list I make, and even when I don't lose them, half the time they're not where I happen to be.
Still wondering where org mode fits.