If you have a trademark, you need to protect it. Protecting your online identity, as well as that of your business, is just as important as protecting your personal identity. By registering ccTLDs you are taking one more step toward preserving your trademark. It is much wiser to be the initial purchaser of a domain than to attempt to acquire it after someone else already has.
Another great use for ccTLDs is acquiring shorter names. It is near impossible to register common words with other more prevalent domain names such as .net or .com. It is much more likely to find these types of domains available in a ccTLD. Similarly, domain hacks are much easier to find in ccTLDs. They lend themselves quite well to domains such as handb.ag, jetl.ag, or dishr.ag.
Name.com offers several .ag extensions to choose from. They are co.ag, com.ag, org.ag, net.ag, and nom.ag.