I'm old enough to remember the dot com crash in the late 90's, and whatever they said caused it, I believe it was because internet advertising was overvalued. People spent waaaay too much on advertising when the internet just wasn't all that popular yet. Pretty much everyone is online now, but then...not so much. Buying stuff online wasn't as accepted back then either. Use a credit card online? You crazy!
Now, I think things are different enough that internet advertising really is valuable. Advertising online stores, affiliate stuff, informational websites, movies and even TV shows is a worthwhile endeavor. And, The Guardian agrees with me. According to them, internet advertising will soon be bigger than magazine advertising. That will make the internet the third largest advertising market behind TV and newspapers.
Everyone seems to be feeling the internet advertising surge. This lil' blog makes a (very) modest amount through advertising. Many other sites run either Text Link ads, paid banner ads, or other assorted sponsored areas. Sites without paid ads can still make a little through AdSense. And, sites with huge readership can really, really rake it in. If you ever read Perez, um, not that I ever do, you'll probably see the huge TV and movie ads he runs. The larger, background ads reportedly sell for $45,000 a week, and he has other advertising besides those. So, the money is out there to be had. All you really need is the readership.