Hey Pedro,
Most likely you contacted wrong sites such as these:
- sites that don't do link exchange,
- sites that aren't related to your business niche,
- sites whose PageRank is much higher than yours.
It's also possible that you hadn't published links to the sites of your prospective partners before writing to them. It's important that the links are included into your link directory
before you start sending out link exchange invitations.
Response rate is usually higher if a link directory looks professional and to-the-point.
Please keep in mind that
a few dozen quality links from relevant sites will do your site more good than a thousand from questionable sources.For more suggestions, please check out our
link-building guide.