vamptrix wrote:
Edit: Sorry mate, but seems twitter forbids it, so no modules will be made for it, most likely :)
(from futuretweets.com):
Quote:

We received a friendly e-mail from the folks at Twitter that providing the recurring updates functionality is a violation of Twitter's Terms of Service. Therefore, as of today, all recurrence functionality will be disabled and existing recurring tweets will no longer be posted.

So litterally EVERY tweet should be unique.. that's a big limitation.. But maybe those services can help you ;)

Eric replies: Would not each tweet in the list be UNIQUE?
By forcing the time constraints would not this cause the max number of tweets per day be limited?

Hmmm... So you mean a Twitter queue? You can put tweets in a waiting-list and send them at a specified time to a specified account?

Not really heard of something like it, and don't think it really needs a XOOPS module to do it. Most likely there is a a service.

Eric replies: I was thinking of offering this as a service to my users.

A quick google gives me this:
http://futuretweets.com/
http://www.quickonlinetips.com/archives/2009/12/schedule-tweets-on-twitter/

Eric replies for the most part sites as these only offer the service where you must place a single tweet for a specific time to be sent. Very time consuming.
Where as if you have a list of tweets with a specific time break, even a random break I think this is an easier service to offer.

Maybe that's what you're looking for?
If it is, maybe someone can make a module for it :)