This site is really ineresting , always CPA work is high profitable work if you have experience in promotion , also you must have a materials like a blog or twitter account to promote the companies and gain profit , but I think the payout threshold is high , I hope you lower it .
What do you mean by high payout threshold? There's only the requirement to perform at least one purchase for most offers. No adequate CPA network pays for signups unless it's the final step.