also all of the above are free or run on ads. the only one where the ads ever get annoying is checklist+ but it's useful enough that i deal with it. mydays has popover ads you can dismiss immediately (as does checlist+), plurk puts ads in that look like a regular plurk, and tv show tracker has some kind of unobtrusive connection with a rewards program that i safely ignore. also maybe banner ads on the bottom, i don't remember.