Dofollow links allow google (all search engines) to follow them and reach our website. Giving us link juice and a backlink.
Nofollow links attributes do not allow search engine bots to follow link.That means if the website owner is linking back to you with nofollow attributes, it does not pass...
Broad match is a keyword match type that search engines use to determine which search terms your ads are eligible to match against. It's called "broad" because it allows your ad to match the widest range of possible keyword searches that are still somewhat related to your keyword.
Google continuously looks for ways to improve the quality of its search results, aiming to ensure the most useful and relevant resources are always presented to its users. Many algorithmic updates have been made in the past, helping to filter out spammy/unhelpful resources from its search engine...
SMO stands for Social Media Optimization. For SMO you have to create a profile on popular social media websites like Facebook, Twitter, Linkedin, Pinterest, Tumblr etc and engage with your social audience.
Keyword competition is the measure of how difficult it will be to rank for a particular keyword. The competition for a keyword can vary depending on how popular the keyword is and industry competition.