You need to be careful when promoting anything that installs software on surfers' computers. You also need to be careful of active-x games (flash etc.). I'd stay away from them, as we are losing enough traffic and signups to stuff like this already.
I guess the alternative is to write your own, and maybe that's the way forward for affiliates.
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Baronets (incorporating Domains for Porn) is holding down domain registration prices for this month.
They are still $7.95 - and that's without any asterisks concealing extra charges.