First off, only promote hot offers that other affiliates are doing well with. Find out from your Affiliate Managers which offers are performing the best on the network. You want to know volume and network-wide EPC.
Before you start doing anything. Get tracking202pro. There's a free trial. If you don't track, you wont know what is making you money and what is losing you money.
Browse landing pages other affiliates are using to promote the offer you chose. Grab the three that look best. Change them around, make them better, and put into an lp rotator. You can find the lp rotator php code for free.
Now go to quantcast.com. Enter the url of the offer and get demographic data.
Browse the top sites on Quantcast, starting with the top 100:
You'll notice quantcast tells you which sites accept ads. Check the demographics on those that do. Advertise on any of them that match your demographics of the offer.
Some will make you money, others will lose you money. Thats why you gotta track! But the ones that do well, you can scale up like crazy. After all you are going after the most popular sites online!
Also get a free offer rotator php script and rotate the offer that is served up when they click through from your landing page.
After about 500 clicks, keep the landing page that works best and drop the other 2. Find two more and put them in the rotator to compete against the winner. You are going to keep doing this process until you find the absolute best lp.
Do basically the same thing for the offer - keep testing until you find the highest converting offer. For the popular niches there are tons of similar offers. Don't be lazy, test them all. Check offervault.com to see which network offers the best pay on any given offer.
When you start doing well with one site, find out through quantcast the similar sites and advertise on those if you can.
And always ask your affiliate managers to bump up your pay. Let me know if you got questions or if you need more info on anything.