Sometimes, your company may launch some special promotions that may "sound like magic". However, if the visitor could not see it, he/she would leave your web page unnoticed. You should use popups and let them know your cool deals. Even though popups have a small display area, their effects are surprising.
"Design is intelligence made visible.", as Alina Wheeler said, your company should show its quality in the foreground. You should know that first impressions count. Many kinds of research proved that visitors mostly leave a website in the first seconds unless you grab them with your style.