You guarantee a #1 ranking for your primary keywords

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Mass directory submissions, article submissions, automated blog comments and social bookmarking
Google Link Guidelines

If you're promised "100+ powerful directory listings," run!

The same goes for bulk article submissions—they're almost guaranteed to have rewritten content, poor linking, and spammy comments. All of these links are the definition of what Google considers "spam."

The presence of such links to your website can put you at risk of receiving a penalty. And trust me, a Google gambling database brazil penalty is often difficult to remove, not to mention that you've wasted money on a company that used dangerous techniques.

These can destroy your website's SEO, so always stay away from links that violate Google's guidelines . And stay away from SEO companies that seem to overpromise content , as they'll likely deliver quantity at the expense of quality.

3.
What do you think you should do if they promise that you will achieve a certain position for your keywords?

That's right. Run!

Be wary of SEOs who claim to have a special relationship with Google or promise to submit your site with a higher priority. Google has its own URL where you can submit your site , and any other advertising is false.

Google URL Tool