After reading this post you’ll find the positive and negative places to get links.
Let’s receive the bad stuff out of the way first. Link brokerage is often bad. There are various reasons. First of all Google can readily detect those back-links using reverse engineering and penalize your rankings. Second of, they generally link to spammers and you should not produce great outcomes in terms of rankings.
1) Paid directories: Spammers prefer quantity over quality. Payment often serves as an effective barrier to entry. Because of this a spammer will endeavour to set links on 1000 ineffective directories and prevent paying for the top-quality directories. Nearly all paid directories have staff that reviews submissions. Search engine listings like sites reviewed by humans and offer them more trust. Most costly directories are dir.Yahoo.com and business.com.
You must review them manually, because unfortunately some of them change for that worst. During the time of this writing these are still good. Also Look at your local directories (especially effective for local brick-and-mortar businesses)
And this is what you can examine: Do they really accept all listings automatically after you pay them? In that case it’s not much of a good sign because spammers may buy links also. How backlinking for seo does the directory have? How many times would it get crawled by Google (check info.directorydomain.com to see last cached date)? What exactly is their Alexa rankings (just how much traffic can they get)?
You can exchange links with directories, but only if they’re vertical directories connected to your industry. An effective approach is to produce a directory yourself and populate it with listings. Apply it to prrlinks to directories which demand a link back in return for a free listing. Never link to low quality directories.
Carefully examine the “directory submission services”, often times they own all the directories in which they’re submitting. This will create poor backlinks for often astronomical prices.
2) Donations: Many non-profit organizations possess a listing of folks that made a donation. You can often create a small donation and acquire a link to your website. Several of these places have common keywords at your location like “nfp”, “npo” etc. Try looking for these keywords to get these organizations.