LB has always been a good way for me to push specific product affiliate link pages that I do not have time to embed into my website/blog.
For example: Just two days ago, I put in $20.00 (left overs) towards my adult ad campaign with LB and I made $40.00 after the campaign had finished. I call that success!
I don't know what you guys are promoting, but if it doesn't sell, than I highly suggest trying other affiliate programs or offers.
You can't promote a guide on how to build igloos in a campaign targeting Egyptian traffic.
Be more specific, and direct, these are quick ad pages that need to catch the attention of potential customers within a short period of time, If they don't care what they see, than why would they bother clicking your ad?
Take your time and plan out what product will work best with whatever country(ies) you choose to target.
Once you hit your mark, you will be glad you did.