Not every website, blog, or forum owner is aiming to get their sites monetized but for those of you who are, Google Adsense is usually the most popular place to start. Even though it is the most popular for monetization it's not the easiest to get accepted to start showing ads by Google. It can take a while to get accepted by Google Adsense and you will need to have a lot of high-quality content on your site to stand a chance at being accepted.
How long did it take you to get accepted by Google Adsense?
For me l have never tried out that before. However l have heard from the Google AdSense users complaining that the process takes one very longer to be accepted and that they have higher rejection rates.