Auto submissions are not recommended for SEO

There are two types of submitting your site, which are manual and auto. If you do auto submissions, we expect that you use softwares and installed it in your hard drive for search optimizing in a fast and lazy way. We don't recommend to use auto submission because it is not SEO friendly, and may cause spamming and imbalance to Google's backlinks. It is considered to be "Black Hat" which is against and unfriendly to Google. It's better if you do manual submission, because it's SEO-friendly.