My opinion appears different from the others, and thats fine. I've been published for 6 years and during that time I've had several newspaper articles written about my books, as well as two radio interviews. To my surprise there was no significant impact on my site deep hits or royalties during that period.

Frankly, this was a shocker. Only thing I can figure is that when someone see's a book or author name in an article, they are scanning the paper for general news, not to specifically buy a book. By the time they go to actually buy, they've forgotten the title/site info. I've evaluated 24 different promotion avenues using site visit/royalty data and this one was near the bottom of the stack.

Course this is just my experiences, others may differ.