We come across plenty of SERP- (search engine result page) -based tools daily. Most of them work the following way: they grab search results for the given term and re-arrange the data so that you could run some type of analysis or discover something your wouldn't be able to see otherwise. Most of those tools are "linear": they rely on only one set of search results. This post looks at some "vertical" SERPs-based tools, i.e.