sure – but your forgetting the PR5 and DMOZ listing.
just have a look at any link sales in the gambling industry – you can easily ask $100 – $200 for a link from PR5 DMOZ listed website.
and if you dont want to have the site oversaturated, you sell only 10 of them for $100 each => and you have the revenue right on the spot. Advertise it a bit better and the income doubles.
is that a virtual potential now?