What are "backlinks"? Backlinks are links that are directed towards your website. Also knows as Inbound links (IBL's). The number of backlinks is an indication of the popularity or importance of that website. Backlinks are important for SEO because some search engines, especially Google, will give more credit to websites that have a good number of quality backlinks, and consider those websites more relevant than others in their results pages for a search query.
I love the broken-link building method because it works perfectly to create one-way backlinks. The technique involves contacting a webmaster to report broken links on his/her website. At the same time, you recommend other websites to replace that link. And here, of course, you mention your own website. Because you are doing the webmaster a favor by reporting the broken links, the chances of a backlink back to your website are high.
Ad blocking, or ad filtering, means the ads do not appear to the user because the user uses technology to screen out ads. Many browsers block unsolicited pop-up ads by default. Other software programs or browser add-ons may also block the loading of ads, or block elements on a page with behaviors characteristic of ads (e.g. HTML autoplay of both audio and video). Approximately 9% of all online page views come from browsers with ad-blocking software installed, and some publishers have 40%+ of their visitors using ad-blockers.