Google digs a little deeper into your developed site’s content perhaps more than you know or intend, and if you aren’t ranking as well for a keyword as you’d like. then it might be because of what you aren’t saying.
If your domain development model didn’t take substantially unique content into account, then this might sting a little.
If you have a lot of Wordpress developed domains, you could run into portfolio-wide problems if you don’t have a testing platform.