How to chose the right Anchor Text ?

Anchor text is clickable text associated with a link. Google looks at the anchor text, freshness of anchor text and changes to anchor text over time.

• If there is any gap between the anchor text and document linking it which may be possibly due to changes in domain ownership, Google can look at time this occurred and can even ignore all valuable links to document prior to event.
• People linking to document should use appropriate anchor text for linking. Google analyses the unique words, bigrams (pair of letters, words or syllables) and phrases in anchor text for a document.
• Google analyzes graphs or unique words, bigrams and phrases in anchor text and checks if information is correct or not. Results created artificially show spiky graphs while natural data shows organic graphs.
• One should not SPAM or try to SPAM he search engine with help of unscrupulous link trading or search companies as it can lead to website being black listed, lowered ranking or even worse site can also get banned.