I find most of my domains (on ppc websites) are seeing less results.
So, trying to establish a set ROI on any parked domain is not logical.

You should not calculate the long term ROI on a domain like you could with a municipal bond.

But, your point is valid that backlinks disappear (or lose their effectiveness) over time. If anything, the majority of them disappear within a year.

If traffic to TheDog.com is residual from a previously developed website, there is no way you can calculate a ROI since you’d have to assume a steady and constant rate of traffic for the life of the domain. Realistically, that traffic will follow a downward curve like the graph of an exponentially decreasing function like e^(-x). For example, you might get 1,000 uniques this month but only 500 6 months from now and only 250 a year from now and so on. In that case, the ROI is not truly 7 yrs and it might take forever to recoup the investment if at all.

Thanks Owen. That might explain the occasional huge surges in traffic for my domain – TheDog (net).

Richard

Japan’s #1 Puppy franchise!
The immensely popular property that launched in Japan of 2000, took the country by storm! It has generated more than $300 million in sales.
Artbank includes: 70 different breeds of dogs & over 100,000 puppy images photographed at unique angles where heads and bodies are adorably enhanced to give museum-like feel.
Strong graphics complimented by a clean, white background sets it apart from all other puppy photography with its contemporary-driven look.

Mouse over the dog art on the site- very neat!