you know i have something similar set up in elevated x for twitter..
elevated x send a tweet out.. and people can see the first page of images.. but can't download or click any large images.. it directs them to a join page.. that works ok for me..
check my twitter. for example - richcash
anything with the word updates should be from elevatedx
here this was twitter yesterday..
http://americankittens.com/twitter//...2&type=highres