Never buy links. Period. You can be penalized for buying links, participating in paid "link building" programs, or having links from sites that Google has blocked, such sites involved in link selling or any sort of criminal activity, or sites containing viruses. I have got it from a site, i need a opinion about this paragraph.
Yes, Google is helping to the society mainly so it needs everything should be neat and clean on the other hand, you need to also build website which is society friendly, then it is going to help you. If you have joined some link exchange websites then you would be banned as there is already these sites in Google's record which sells and buy links.
Now I'm confused. Doesn't Digital Point have an area for such things here? Doesn't that put site owners in danger as well?
buy links is quite confusing factor. What about the directories who charges for listing? Aren't those paid links?
You don't get penalized for buying links, you can't control where your link is placed. Buying links on sites irrelevant to your niche might get you blocked by google though.