Taboola, an Israeli video discovery startup, has raised a $1.5 million first round from Evergreen Venture Partners, according to TechCrunch. Taboola is working on a snap-in service that other video sites can use to deliver discovery services to their users. The company is still in beta, but you can see an example of the service in action at the site 5min (see the bar on the bottom right). Other start-ups working on video discovery engines include Vodpod and Mesmo, though both are positioning their services more directly to consumers.