Topic: Other Careers Posted By: Gyang Post Time: Aug 17, 2008 at 06:59 PM. There are always two sides to every coin. As with all things, online mortgages, for all their many benefits, do have a certain disadvantage. And this certain disadvantage is enough to cause some people from engaging in such. Because part of the transaction is done online, people are hesitant to pursue online mortgages.