Some 'seo' companies offer tools that let you submit your site to all the major search engines, sometimes even for free. This practise is referred to as automated submissions and is heavily frowned upon by the top search engines. In some cases it is even against their guidelines.Using these tools,and a very nasty example is webpositiongoldwebpositiongold, can be considered black hat seo. It's a sort of spam, you should not take part in these practises, even if they are offered for free, your mail box will explode from the spam could send you.
In any case automated submissions is an outdated technique and should be steered clear of.
