Hi Ludmilla,
Sorry for the delay in replying here

I've changed my tickler system a bit since that post, but I'll explain how I was doing it, and what I'm doing differently now.
PREVIOUS METHOD:
E-Ticklers on the Palm mainly. I had a todo category named "Ticklers" and each item would go there. A date would be attached - when I wanted to revisit an idea, when I wanted to make a decision, etc.
At that time I used Action Names/Agendus for the Palm, and the tickler category was given its own highlight color. Agendus only showed my dated "todo" items on the calendar, so when the tickler date rolled around, it automatically showed below my appointments with a highlight color. When it turned up I'd either address it, trash it, or "file" it to another date.
WHY I CHANGED:
I stopped using that method primarily because I stopped using Agendus. The new versions seem too cluttered with "features" and I was wasting too much time playing/configuring/etc. I know the power and simplicity of a "vanilla" Palm OS (I actually wrote a booklet on it a few years ago), so I went back to using that.
I also realized that the majority of my ticklers were related to bills. So...
CURRENT METHOD:
Now I have a "todo" palm category called "Bills to Pay". This is just a simple list, sorted by dates in this format:
[date] [Item] [$ Amount]
If the amount is approximate, I put a ~ in front of it. So the phone bill for instance, might look like this:
10/27 Phone ~$50
I try to update the books weekly, and when doing so I have the bills list in front of me. Anything due in the next week will get a check cut, and the entry checked off the list. When new bills come in, I simply enter it's new date and amount to the list.
This list is also useful when money comes in. I look to see what $ committments I have to deal with soon, so I'll know if I can "splurge" and by how much.
And of course if you run into tight times and have to push some bills back, seeing their original due date sitting at the top of your list keeps you aware of how far behind it is.
Any OTHER tickler type items that are not bill related, are entered as an untimed event on my calendar, usually in the form of a question:
Subscription due: $X - Cancel or Upgrade?
Order XYZ Book?
Act on this promotion/idea?
Change/implement this habit?
etc.
Hope that all makes sense and hope it helps a bit

Kathy