Again, if your blog has a large reader base, then businesses may be interested in paying you to review their services or products. Not only will you get a free trial using whatever these businesses are selling, but you will also get a fee for writing them a review and posting it to your site. Paid reviews (and other paid and sponsored content) can be big money, so advertise this service on your contact page to generate business.
According to the FAQ of the net.legends Usenet news group, Dave Rhodes was a student at Columbia Union College (now Washington Adventist University), a Seventh-day Adventist college in Maryland, who wrote the letter and uploaded it as a text file to a nearby BBS around 1987. The earliest posting to Usenet was posted by a David Walton in 1989, also using a Columbia Union College account. Walton referred to himself as, "BIZMAN DAVE THE MODEM SLAVE", and referred to "Dave Rhodes" in his post. The true identity of Dave Rhodes has not been found. A supposed self-published web site by Dave Rhodes was found to be fake.
One of the cool things about Google AdSense is that it's so easy to get set up. If you have a blog or website, you can sign up for a free Google AdSense Account. From there, Google will give you a unique code that you will paste onto your website. Google takes it from there, tracking your page views, traffic, and earnings on your behalf. There is no upkeep or maintenance to get this thing going, which makes it a no-brainer if you have a website already.