It's wonderful to deal with keywords that have 50,000 searches a month, or even 5,000 searches a month, but in reality, these popular search terms only make up a fraction of all searches performed on the web. In fact, keywords with very high search volumes may even indicate ambiguous intent, which, if you target these terms, it could put you at risk for drawing visitors to your site whose goals don't match the content your page provides.
ccTLD plays a role in stating which specific search market/location your site wants to rank in. Some examples of ccTLD would be websites ending in .ph, .au, etc. instead of the more neutral .com. If your website is example.ph, then you can expect that you’ll rank for Google.com.ph and you’ll have a hard time ranking for international search engines like Google.com.au. If you have TLDs that are neutral (.com, .org, or .net), then Google will determine the country where you can be displayed based on the content you publish in your site and the locations of your inbound links.
When you are creating your content, you want to use keywords that typically get a high amount of searches without being too hard to rank for. This is the main reason why if you are just starting as an internet marketer, you may have a hard time promoting your products and services as a result of not being aware of the best target keywords to use. You need to pick keywords that you have a chance to rank for in the search engines. If you can’t get seen by potential readers, you will not be able to generate the traffic you need to find success and make commissions.
3. Finally, there's just good old research through trends and news. Google Trends, keeping up on industry news of the business, and even newsjacking (if there are relevant topics). These all require different resources depending on the business, but once you find the leaders in their news you can not only leverage them for keyword research but also glean insights into how you can become an industry leader yourself (and dominate SEO).
This will instruct search engines to avoid this specific link. The attributes found above helps define the relationship that a page or content has with the link it is tagged with. Nofollow links are mostly used in blogs or forum comment because this deems spammers powerless. This was created to make sure that inserting links is not abused by those who buy links or sell them for their gain. As a webmaster, it is your job to check your pages for these links. Inspect the code and see if the links are tagged with its corresponding follow or nofollow attribute.