As we know that PPC stands for pay-per-click, a model of internet marketing in which advertisers pay a fee each time one of their ads is clicked. Essentially, it's a way of buying visits to your site, rather than attempting to “earn” those visits organically. Search engine advertising is one of the most popular forms of PPC.
We can easily check the latest update about PPC in a search engine on by visiting below websites :
Search Engine Watch (www.searchenginewatch.com)
Search Engine Land (www.searchengineland.com)
Search Engine Journal (www.searchenginejournal.com)