I think newsfeeder has hinted at the answer - its not so much quantity but quality that counts. You could get thousands of backlinks very easily by setting up a spam site with thousands of backlinks to your site, but that would be not only a waste of time but would be bad for the internet as a whole and would probably raise a spam flag at google.

If you build a good quality site then you will get backlinks without having to do anything, people will link to your site if its good.

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A website about converting a loft with ideas and advice for loft conversions.