Merely mentioning the existence of export regulations, without making them a condition of the license itself, is acceptable since it does not restrict users. If an export regulation is actually trivial for free software, then requiring it as a condition is not an actual problem; however, it is a potential problem, since a later change in export law could make the requirement nontrivial and thus render the software nonfree.
Gale is an e-research tool offered by Cengage Learning. It's designed mainly for schools and educational research, but can be quite helpful in generating sales lead lists as well. Gale publishes over 600 databases, both in hard copy and online. These databases include both business information and collections of articles on various subjects. The article lists are particularly useful when you're collecting lists of publications related to your industry.
Freeflys: Another strong contender in the freebies space, Freeflys has appeared on NBC’s Today Show, The Doctors, Fox News and a handful of other media outlets. Similar to most of these sites, Freeflys utilizes email alerts to tell users about free-sample offers as they happen. The site also allows you to search for a specific product with the handy search bar.