Thanks Kelly. Yep that's exactly what is meant by one way links. It's ok to trade links with people, but those traded links are probably best to be kept to a small percentage of your overall links.

The idea is that if I link to your site without getting a link back then I do think your site is valuable. If I need the link back then I may not really be voting for your site, but we're both just trying to give ourselves a boost in the search rankings. There are legitimate reasons to exchange links so there's nothing wrong with it, but it's the one way links where you don't link back that will have more of an effect.

Reciprocal links are OK. It is perfect to get software that will check periodically for your links on other websites [for example link exchange script or Arelis software]. If not, soon or later some webmasters will remove your link and reciprocal link will be a one way link to other website. That way reciprocal link exchange without checking is useless.

Regards,
Syl