Ask a question around your subject knowledge and expertise:
Asking questions is a way of demonstrating your knowledge and expertise and gathering informaation.
I asked this question“ What would be the one piece of advice you would give new managers?”.
I had 14 replies and then wrote a blog round the question and listed the replies that I had. I then sent a tweet thanking the people who had replied with a link to the blog. It generated a lot of traffic to my website.
This can work whether you are promoting a service or a product. One of the people I follow uses this technique successfully every week. You need to ask the question more than once and change the wording slightly. Eg
1. What would be the one piece of advice you would give new managers?
2. Did you see my question about the one piece of advice you would give new managers?
3. I've had some great responses to my question about the one piece of advice you would give new managers. I would still welcome your opinion.
4. If you could only give one piece of advice to a new manager - what would it be?
If people have a schedule of Tweet tasks daily as you have laid out, I definitely think they will be able to spend 20 minutes during their day and forget about it (other than responding to @mentions).
An automation training piece would be a nice follow-up to this, using a service like Tweet Deck. It can become a quick "weekly" task if this is done correctly. :) Thanks again.