Site Title and Description - marykae/public GitHub Wiki
Create Descriptive Page Titles
Make sure every page on your site has a title specified in the title tag
Page titles should be descriptive and concise
Avoid keyword stuffing
Avoid repeated or boilerplate titles
Brand your titles, but concisely
Be careful about disallowing search engines from crawling your pages
Create good meta descriptions
Make sure that every page on your site has a meta description
Differentiate the descriptions for different pages
Include clearly tagged facts in the description
Programmatically generate descriptions.
Use quality descriptions
Descriptions are truncated around 160 characters (give or take)
Prevent search engines from displaying DMOZ data in search results for your sites
Maximum number of characters in a website's title that is displayed on Google's SERPs varies between 50-70 and there is no set number. Google uses what it finds useful.