Of course they're being manipulated! Here's why:
All the software out there to bulk check overture counts as a search for next month's update. A search that was not an end user typing the query into a yahoo searchbox.
That means it's being manipulated.
I know the thread your referring to - that seller mines the names and then sells them. He's not intentionally creating bogus queries just to beef up the results.
A lot of the time, if the results seem strange, it's not going to be a traffic domain.
Here's an example:
7371 site steverossforcongress.com
7273 linkdomain steverossforcongress.com
7272 steverossforcongress.com
Notice the 'site' and 'linkdomain' helpers. That's some kind of automated analysis bot.
Beware of names with weird results like this.
Most of the time, if your buying a domain strictly based on its ovt score, ask the seller to test the traffic for a week or two, and offer to give him or her any revenue that it generates in the meantime.
This isn't a rampant problem as of yet, but it can be in the future.
Just be careful out there and know who your doing business with.
If the seller isnt willing to let you test the traffic, you might be better off saving your money.
Then again, there's always the chance that you may find a diamond in the rough.