Google Data Highlighter
Did you know about Google Data Highlighter program? Just apply to Google webmasters tools and under section of optimization your site you can use this useful tool called Data Highlighter.
Google initially launched a visual rich snippet markup tool in December to allow less tech-savvy webmasters to markup their event based data. The tool only worked with event data and nothing else.
Google has updated their help page showing the six new data types, in addition to the events data type. They include:
Google will likely continue to add more data types to the data highlighter tool over time.