Technology develops faster than the law does. This can have both good and bad results. Take the practice of web-scraping, for instance. The same type of software used to detail the content of your site for search engine results can also be used to rob you of your innovative content. Instead of just syndicating the content to provide it for search results, the software can also ‘scrape up’ the content to be used somewhere else.
The logical legal tool to deal with web-scraping abuse is copyright.