I picked a random member, selected a random old post. I don't see a notification. Must I click something first? If so, I suggest making this friendly little heads up notification about tipping visible the moment I enter. Maybe it could appear in the bottom right corner, similar to the recovery account notification. Maybe it could be a bar/box covering the vote button area.
Human psychology. People need to be tempted into donating. This is why they place donation boxes in a high visibility area, on the counter, right next to where a consumer takes their goods to be purchased. Put it anywhere else that isn't so obvious, and whoever is accepting donations probably won't even see a dime. Needs to be convenient.
Go to an old post that is older than 7 days and click the heart button.
We are open to finding a better UX for tipping.
This seems like the best option. I wouldn't want a popup on every post older than 7 days that I read.
So yeah, I have to click. I'd suggest skipping that part, as stated previously. Totally up to you folks though.
when you try to like it (click the heart button) you get the notification and an option to tip
And yeah, I'm suggesting to make it more obvious as in, no click required. A simple notification right out in the open, clear as day, much like these words here today.