Dive Brief:

• Pinterest announced Friday that it has cut the number of Pinners that click on spam in half during the last six months. The number has "nose dived" so much that the site says the spam metric is "not a useful metric anymore," according to an announcement on Pinterest's site.
• The social site is utilizing "Stringray," a stream processor and rule engine Pinterest began developing last year to pre-empt spam attacks. 
• The result of the new system is spam attacks can be dismantled in milliseconds, which is a process that used to take four hours to an entire day.  

Dive Insight: 

This information will clearly be good news for marketers on Pinterest, unless they themselves are using spam tactics. After all, the cleaner the platform the more legitimate messages that will reach the right audience. 

Just last week, Pinterest announced it also put a halt to all affiliate links on the site. The social site is clearly making moves to clean itself up before rolling out a "buy" button that Re/code reports could debut sometime this year.