These new specialty engines (verticals, if you like) appear to allow the searcher to search topic-focused portions of the main Gigablast web database of more than two billion pages. I hope to spend some time checking these new resources out over the weekend. If you're not familiar with Matt Wells, here's a very interesting "conversation" about Gigablast and web search in general between Matt and Steve Kirsch that was published last year in ACM Queue.
Optimising Digital Marketing Campaigns with Search, Social and Analytics
At SES London (9-11 Feb) you'll get an overview of the latest tools, tips, and tactics in Paid, Owned, Earned, Integrated Media and Business Intelligence to streamline your marketing campaigns in 2015. Register by 31 October to take advantage of Early Bird Rates.