tellmethis wrote:In the absence of an easy 'push' implementation, for me personally, that in itself wouldn't matter so much.
Just in case my previous point wasn't clear, let's assume that you just started a board and only one user has registered and posted a question. You've subscribed to the forum and so got a notification of the new topic. You read the topic, but don't have time to answer it, so you post that you'll answer within two days and you set a reminder. Now both you and the user are busy, so neither of you checks the board for three days. If nobody else visited your board to trigger
cron.php,
no reminder will have been sent before two days were up. That seems to fail your requirement.
tellmethis wrote:The most important benefit for me with such a feature would be a quick and easy method of "don't let me forget about that". Even if I could access a list of nominated forget-me-nots next time I logged in to the forum.
But what happens, as in the case above, where you don't visit your board for three days because you're busy doing something else?
tellmethis wrote:This would obviate the necessity, as phpBB currently stands, to engage a different application altogether for arguably a very simple step.
But you
have engaged a different application if you want a notification sent to you -- your E-mail client or IM client.

So using a To-Do list is just replacing one application with another. (I realize that it's not quite the same. You use your E-mail or IM client to check subscription notices, so you could say that my solution requires
two extra programs, but they're two different use cases, too.)
tellmethis wrote:Right now, if I want a particular topic not to slip through the cracks, I either rely on a 3rd party to respond to my post, which effectively acts as a reminder via reply notification (and you know how reliable 3rd parties can be), or crank up a separate application capable of issuing me a future reminder.
You could probably try PMing yourself. If you posted an "I'll get back to you" post, click the PM link there and it will include a link back to your post. Title the PM "Don't forget to respond to..." and send it. The next time that you visit, if you have PM pop-ups on, you might get that pop-up.
I say "might" because I haven't tested how the "New Message" pop-up works. Will it pop-up every time until you read the PM, or just the first time that you do anything in phpBB?
UPDATE: It may only pop up once, and that time might we when you send the PM to yourself (if you aren't taken to your Inbox directly). However, if you close the browser tab/window containing the Sent Successfully message, you'll still see New Message alert on your board (at least until you visit your Inbox). To fix that, you could probably create a MOD (if it doesn't already exist) that pops the window open on
unread (instead of new) PMs and change the message to flag unread PMs. That would probably be simpler than trying to create a reminder feature. Of course, it still has the downside that it requires you to visit your board before the time limit expired.
By the way, this isn't an attack on the idea. I'm just trying to point out the problems with the proposal and suggest other alternatives that are available using the current phpBB release. I do think that the feature has limited uses, though, and would probably serve a niche smaller than most items that should be considered for core phpBB features. I don't recall seeing a similar request, but have seen many other features requested numerous times.
Steve