I will check out AdtrackZ and consider it for a partner, thanks for the recommendation(s)!
As for being able to selectively send to users who have clicked on a certain link- Now that I think about it, this will be difficult for me because it will require a new type of MySQL query. (I don't even know what type will be best here). I'm going to have to read up on some MySQL tutorials before I can put this in. I'm thinking I should increase the default value of tracked hits kept in the database to prevent undesired results with this feature.
While I would love to have been able to work on and complete this right now, it's getting late and I need sleep :|. I'll try to get it in very soon, maybe even tomorrow.
I'm on a roll, I just completed updating the scheduler main page [see latest download] and am motivated to do even more ASAP!
Regards