For anyone else that wants to build up email subscribers, Aweber does work on Moonfruit sites. It allows you to collect email addresses and send out proffessional looking emails. You can also have pop up boxes that work on moonfruit sites. I have only used it for two days but have 15 subscribers already and can send out sales emails. An example here http://betting-uk.org ( right click and open in a new tab),  link to Aweber http://moonfruit.aweber.com  There is probably a lot more uses to it, but i'm still learning and wish I found this a year ago!