21. The Nofollow attribute:
22. The reason why you should avoid hosting free articles or content that is common on the web?
23. Using the same keywords too many time on your web pages, which has a negative effect on user experience and ranking, is a practice called:
24. What does anchor text mean?
25. What does broken link building tactic include?
26. What does search engine saturation mean?
27. What does SEM stand for?
28. What does SERP stand for?
29. What does the no archive tag instruct a spider?
30. What does the No Snippet tag tell a search engine?
USA - United States of America Canada United Kingdom Australia New Zealand South America Brazil Portugal England Scotland Norway Ireland Denmark France Spain Poland Netherland Germany Sweden South Africa Ghana Tanzania Nigeria Kenya Ethiopia Zambia Singapore Malaysia India Pakistan Nepal Taiwan Philippines Libya Cambodia Hong Kong China UAE - Saudi Arabia Qatar Oman Kuwait Bahrain Dubai Israil and many more....