Building an Email List for a Niche with Short Term Customer Interest?

I'm just curious as to how effective it would be to create a list for a niche that people are only interested in for a short period of time? In this case instead of running a live blog I would be using an autoresponder to send out information over the course of say 2 weeks with maybe 7-10 emails.

Most of my opt-ins hopefully will be coming from an article marketing campaign on a few of the top directories with links going to my squeeze page (not designed yet) with a good free offer, not 100% sure what I'm going to use for that yet, but I have a couple ideas on that. Once they opt-in then I will use the autoresponder to send articles with some affiliate links that my readers will hopefully find useful.

Of course I realize that if all I do is think about it or make plans, I'll never make a dime. So, even though I'm posting this thread and asking questions, I'm starting to work out what I hope to be a good campaign for this. Mostly finding a handful of good products on CJ to promote through my emails.

One of the reasons I am considering this over using a regular blog, is that with this even if someone joins my list a year from now, the articles that they read will be able to appear fresh. I also plan on using this as a great learning tool as well, really only recently I realized what the term "squeeze page" actually meant in Internet Marketing, was quite a bit off before!

I am incredibly new to Internet Marketing, and also stuck going with free tools, using mailchimp for my list until I get some cash. So with that, any quality tips for what I'm looking to do would be appreciated big time!