GoogleAlert is a product that will provide an RSS feed for your Google Alerts.Feedster, IceRocket, Pubsub, and Technorati provide similar services for blogs, news, or a combination thereof.You can then use something like FeedJumbler which can combine these feeds and generate something that can be copy and pasted right into your site.As far as copyright, redistribution of links and headlines usually fall under fair use, especially because they point back to the original source. Displaying the headlines shouldn't be a problem.I've included links to all the services mentioned in the sources below.

www.googlealert.com