When once you build links for your site, at that time try to build quality and permanent links so you do not need to make resubmission for more site results. And if again & again you make submission then it be looks as the spammy content and your site get negative impression for that. So never make resubmission for your site but once make accurate submission that can generate long time results.
Submitting the site to search engines every month is a waste of time. The search engine will automatically crawl your site based on your site content and how frequently you are updating your site.
All those thousands of search engines and directories that one finds on the net?
Well, guess what?
The vast majority of them pull from GOOGLE!
So I have never wasted my time submitting to ANY search engine!
Any webmaster who is naive enough to submit to any search engine is just that, naive.
Or he has been in forums where lots of idiots tell you to submit.
Like check this thread out for those that say to submit!
Wire this into your minds:
THERE IS NEVER ANY NEED TO SUBMIT ANY WEBSITE AT ANY TIME TO ANY SEARCH ENGINE!
NOT WHEN IT IS NEW AND NOT WHEN IT IS OLD.
JUST NEVER SUBMIT!!!