This is a google cache of talkorgins.org showing the porn spam links.
However, I checked on deepx.com and it is *not* a porn site.
From DeepX.com's about page:
XML provides an open and flexible language for the creation, management and exchange of electronic content. Founded in 2000, deepX has an experienced team of consultants and developers, who specialise in the design and development of solutions using XML and the emerging technologies related to XML.
Also, another link shows www.theoi.com and it is *not* a porn site, either:
Here's how THEOI used to look via the Wayback machine.
Theoi.com has been banned by Google (no reason given) and forced to close down as a result. There are no plans to re-establish this site in the future.
wu.edu.gh is Valley View University is a Seventh Day Adventist college in Ghana.
Both deepx.com and wu.edu.gh redirect to porn sites.
Unsurprisingly, wu.edu.gh, theoi.com and deepx.com have been de-indexed by google.
I speculate that all these sites that have been de-indexed were tagged by automated processes.