I hope Lewis doesn't mind my replying. You've sort of hit the nail on the head, a nofollow link looks exactly like that first bob marley link yes. That rel="nofollow" is the key.
It's not totally useless though, it does have substantially less value, but a search engine will still follow the link, it just doesn't apply the same metrics and credit it would to a normal link.
A nofollow from a reputable source is worth having, even if it's not ideal.
The link from Ziggy Marley is a nice follow link and should be very helpful.
Tom
