How many links to aquire from one IP until penalty?

[jfkorn]

My client has a small site with about 340 links pointing to it. About 60 of them stem from one domain, a directory listing that posts new entries on almost every single site of their domain.

My question now is: This obviously isn't a really clever link profile. But I can live with that as long as it doesn't HURT rankings or attracts some kind of penalty. Is there a rule of thumb how many (maybe percentage) links can safely stem from one domain without getting penalized?

[AdamThompson]

I wouldn't worry too much about it. I would expect Google to discount the duplicate links, but not penalize you. I have had my articles picked up and syndicated across spammy site networks and get a bunch of links before - I don't think it helped me much, but it didn't hurt either.

Just focus on getting more high quality links to improve their link profile and give them a greater variety.