Google Says Website Submissions Service Can Hurt Your Web SiteIn a Google Webmaster Help thread John responded to a webmaster who was asking "mass website submissions to search engines," and asked if it will have any impact on their rankings.
John from Google said, yes, it may, it may have a negative impact. Why? John explained that it can lead to a tremendous number of unnatural links for your site. As you know, unnatural links can more than ever have a negative impact on your site.
Keep doing things slowly and make it natural. no mass submission, mass link creation tools or Google will get you in the end.