At the end of the day, what makes a profit for you makes a profit for the parking programs.
Its always a tough call with the winners and the loosers, but without testing them all you will never know what is best for you for that month.
It is true that some programs work better than others for different market sectors and geo-location, you just have to find the one that works for you overall.
PPC fluctuates so rapidly it really is somewhat of a lottery to get real concrete proof that Google is Better than Yahoo. The only way to do this is in real time, whereas you spread your traffic equally over several programs and at the end of the month whatever program earns you the most then stick with that for 2 months and then do it all again.
I like to assume that programs like Parked and Namedrive actually pay you a percentage of the actual PPC from the respective programs unlike SEDO who pay based on some chaos theory of perceived revenue.
Parking programs really need to start offering incentive bonuses, whereas if you park for 3 months you get a 20% bonus on top of your earnings.
So, say month one you earn $100 and month 2 you earn $100 and month 3 you earn $100 your payment on month 3 would be $160 - $100 + $60 bonus ($20 for each of the 3 months)
The established programs can afford to share upto 87% in favour of the parker, very few go above 50% and therefore after recouping R&D costs in the first year it would be more profitable for them to give the lions share to the domainer in the long term.
Stick with the programs who do not have so many investors otherwise you tend to get a smaller piece of the pie, due to investors taking out dividends.
Programs are valued not just by the turnover, but also by its client base; the more clients the more turnover; even if you are paying more than 50% rev share, also the more Clients the more likely the program can negotiate a larger share from the feed.
SEDO has the largest google share than all the other programs, yet the domainer never sees it.
2007 should be the year of the domainer as without domainers there are no parking programs, without parking programs there will always be domainers.
Dont expect the programs to do the work for you, take the time to research each of your OWN domains and target them correctly. The programs do not have the manpower to do your names justice. Treat domaining like you would do any investment. Monitor the market and pick up on the trends, if your domains are not doing more than reg fee a year then its time to cut loose or develop.
What I want from 2007 is a parking program to converge with an affiliate program. PPC links down one side and 2 or 3 relative CPA links down the other and of course more transparency with all the programs being audited.