10 sites in group - slightly odd listing

EDIT: Only 7 sites now (you could add as many domains as you like using the script).

Hi, I have a collection of sites as follows, which I wrote entirely myself (save a bit of borrowed css). The domains are coming up for renewal (with godaddy) and I can't be bothered to do anything with them... Yeah, I'm kinda lazy.
here are the domains and renewal dates:
BUSINESS-THING.COM - Oct. 17, 2007
ENTERTAINMENT-THING.COM - Oct. 17, 2007
FINANCE-THING.COM - Oct. 17, 2007
MARKETING-THING.COM - Oct. 17, 2007
SEARCH-ENGINE-THING.COM - Oct. 17, 2007
SPORT-THING.COM - Oct. 17, 2007
VIRAL-THING.COM - Oct. 17, 2007

All the sites pull content from a mysql database of over 40,000 articles which I gleamed from the internet a while back. They are split into title, author, article, byline and section (e.g. finance).
I have written a script which splits the articles into two columns, which are sperated by   spaces. Have a look at one of the sites and select the text - You will see that the columns are not really columns, but the text runs straight through the line. This was an attempt to avoid the duplicate content filter, I haven't seen this anywhere else.
when a user searches in the search box, a new page is created and cached which is then linked to on the left hand side. The first article on that search page is linked to on the right hand side of the page. duplicates do not appear on the right, if the first article is already there, the second is used, etc.

together, these sites have made US$49.17 on adsense in a year:

US$31.24 of that was in the last 6 months:


The sites all have pagerank 2 or 3.

I'll help whoever buys them set up the script and I can answer any questions.

This is an auction, ending in 5 days - Friday at 6:35 according to the forum clock.
Start price : $10
Buy now : not sure yet.

Cheers,
J.

EDIT:
Here are the stats for this year, this month and last.

 

Sold three of the domains, no problem as there are no bids.