Lack of documentation. There's a very basic installation script and some FAQ's and that's about it. Email templates have to be edited one by one to take their name, link to their website and email addresses out, and there's about 50 of them. Passwords ARE NOT encrypted in the database. There's no previous versions of this software to be found, nor is there any indications that they are working on newer versions. Most of the positive reviews on here are in broken english, so it's easy to tell that they were most likely written by the same person. Support is sub-par. I did get one question answered, but emails since then have gone unanswered. There's no support ticket system, no forums. You are limited to the number of extra fields you can add to a listing, when you do add them there's no clear way to get them to appear on the listing.