I am wondering how to get undetectable paid links.. If I have a bit of cash to invest in building links from good websites, how should i go about it? I am looking for in content links rather than sitewide and my niche is health.. I can't go directly to email each website as this will be too time consuming. I dont want to buy links from websites that directly advertise they are selling links. I dont want to buy links from popular link selling services as google catches up to this and penalizes. Is there any alternative that makes the process easier than manually emailing each website to see if they accept advertising?