What do you like best?
What I like best is their customer support, unlike others I have experienced theirs is top notch, I give them 100% for that. The first time I had issues with them they didn't waste any time at all, the live chat was active and on time and the agent who attended to me had to work on my PC remotely and securely. I love the experience.
What do you dislike?
The Payment method frustrated me as I was unable to use my Master Card to pay for my advert. My bank claimed they were trying to charge me directly in my local currency that they should have charged me in USD. Unfortunately, they were unable to resolve that. I think they are used to one method of payment and US Based audience.
Recommendations to others considering the product
To be frank, aside from payment issues on my Bing account, I think Bing is as Good as other ad networks including Google Adword. If you have means of settling your payment without violating any of their rules please give it a try. And if you have any issues I believe their customer support will be ready to help you out.
What business problems are you solving with the product? What benefits have you realized?
Advertising. I was able to send some traffic using their initial threshold but I could not really scale the service since I couldn't continue the advert.