TradeKing offered a $50 incentive in the form of a banner ad to set up and fund a brokerage account online.  I set up an account with them in January of 2013, and met all the requirements to obtain the sign on incentive.

The requirements were to make 3 trades and have $3000 in equity over a 90 day period.  After 90 days, they were supposed to credit the account with the $50.  I emailed their client services department shortly after signing up to verify the requirements, and to make sure there was no misunderstanding or fine print.  These requirements were verified by Cindy Martinez of Client Services.

After 97 days, I had not received the money.  I emailed them to ask when to expect it, and at that time I was told by a new representative, Marissa Harris, that the promotion had ended before I signed up.  When I told her that I had corresponded with a representative shortly after setting up my account, she told me that the representative had misunderstood which promotion to which I was referring.  

I explained that based on my question and the representative's response, there could not possibly be any confusion.  I also asked how it was possible that I had been brought to their website to set up the account by clicking the banner ad if the promotion had expired.  The response I got was curt, saying that there was to be no further assistance regarding my concern, and that I must have clicked on some third party banner ad that misrepresented their promotion.

I still maintain that if this were the case, the link would have been broken, and the banner should not have taken me to their website to sign up.  Further, the representative I emailed should have told me that the promotion had ended.  As it is, TradeKing made money off of me, as I made several trades during the 90 day period, and then they did not honor their promise.