A suggestion typically represents a product, a product category, a web page,
or a search keyword. There are two types of suggestions: direct link suggestions
and text suggestions; text suggestions are search keywords while direct link
suggestions are suggestions which have a display text and a URL. Suggestions
have popularity scores, which are used to determine the importance and order of
each suggestion. The maximum size of a suggestion record is 5KB.
You can decide to deploy each suggestion list in multiple Data Centers globally.
When you deploy a suggestion list to N data centers, your suggestion usage is multiplied by N.