I’ve never seen any parked domain traffic from Google convert. Zero. Zilch. I have seen conversions from Yahoo! parked domain traffic. However, the conversion rate was below search.yahoo.com traffic. I’d be curious to compare contextual advertising ROI to parked domain ROI to search engine advertising ROI. It’d make it much simpler to make these sorts of comparisons if the search engines would split their traffic from 2 networks to 3. IOW, if Google would have Search network + Content network + Domain network. Now, with the parked domain traffic being split between the Search and Content network, it’s difficult to draw accurate conclusions.

Also, I think many people are equating “direct navigation” with “parked domain traffic” and that’s simply not the case. Most of the stats showing high conversion rates (higher even than organic search traffic) for direct navigation don’t split bookmarked traffic from other forms of direct navigation. Again, the stats are skewed – and worthless.

Everyone needs accurate stats to make the best decisions. The fact that no one, including the search engines, is being forthcoming leaves me wondering if someone’s trying to hide something.