Keyword spamming is the practice of inserting a large number of keywords into Web content and meta tags in the attempt to artificially increase a page's ranking in search results and drive more traffic to the site.

Keyword spamming is the term given to the excessive addition of keywords or keyphrases to a web page. This could be accomplished through a variety of means ranging from simply repeating keyphrases in your body text.

Search engine robots (bots) look at this file to see if they should crawl and index pages on your site, certain file types or even the entire site. An absence of this file gives them the green light to crawl and index your site

Conversion Rate Optimization can be defined in three dimensions.
Designers – Uses this method to optimize a client's website with a main goal to maximize conversions.
Business Owners – Consider this as part of an online marketing strategy.
Visitors – Causes visitors to buy a product or service and/or promote an internet page to others.
SEO and CRO have three things in common: visitors, traffic generation, and results.