AKICILJ: Web based to do list

Does anyone have a recommendation for a web site for keeping general to-do lists?  I'd like something that's semi-secure (i.e., requires login and doesn't share my list with the world) and is convenient and dialup-friendly the way frequently editing an LJ entry is not.  I want it to be web based so it's available from any computer.  I thought LiveJournal had a to-do list feature, though I never used it, but I can't find it now.  (Am I delusional, or did they remove it?)