A WebmasterWorld member was desperate for improved rankings, so he bought links. As a result, his rankings tanked and he was wondering if there's a better way to buy build links.
Really, if you're trying to buy links, the recommendation is to avoid using brokers. Go directly to webmasters and ask them if they can place a link on the site where it appears naturally (not in the navigation, for example). Additionally, go for quality over quantity. As pageoneresults says, "[t]en (10) high quality links will typically trump a hundred (100) low quality links."
The best ways to build links is slowly and methodically, he adds. You don't want to add a bunch of inbound links immediately because it can raise red flags.
On a related note, Jim Boykin suggests that you build links by focusing on the right text by having the right content on targeted pages. Don't necessarily link to your homepage; build links to the appropriate internal pages instead.
Forum discussion continues at WebmasterWorld and Sphinn.

Comments:
Richard Safari
05/28/2008 10:59 am
I have seen directory submission services that give you about 800 links for only $40. Please don't register because they wont help in your SEO effort. The slow natural link building is the best.
No Name
05/07/2010 12:10 pm
Simple and short: Link buying is not worth the effort. Google's algorithm is becoming more stringent regarding this type of link building.
Jacob
08/11/2010 12:21 pm
I would rather climb kilimanjaro than buy a link which will probably have no strength anyway.