I've recently signed up for adbeat.com and like the way it rolls. However, I find the single keyword search very limiting.
Does anyone have any tips to maximize the tools potential even with a single keyword?
For example, if I research offers for, say, '$500 grocery voucher' none of those workds helps me within adbeat to narrow down the leg work much.
Any ideas/suggestions/general abuse welcome. 
They allow multiple keywords as far as i know?
Well, I can enter them into the search box but when I go to 'top ads' I get a black box at the top of the screen with 'internal error' message.
Try top ads (beta)