I don't think the question was: "is it legal to scrape", rather: "do they like to be scraped". If they wanted to, I'm sure they could make scraping harder (more annoying). Which, I suppose, thus comes down to: is being aggregated a net plus or minus for their business. Probably "it depends" on what the aggregator does with the data. So, just to get this pun in: it then comes down to: is being aggregated a net plus or minus, IN AGGREGATE.