We are very sorry that you are experiencing inconveniences with the logo being added to the free visuals. We had to make this move, as the number of users getting and using the free edition is growing rapidly, however, number of paid users is not. There are costs involved to maintain and support the growing customer base and we need your support to provide you with the advanced visuals. When we reach a sustainable level of paying customers, we will replace the current large logo with a much more subtle version or maybe we will remove it at all.
To make things worse, there is no way we could have communicated this to you as we do not have your email addresses - of those using the free visuals.
We would not have made this step, if there was an option to provide paid add-ons via the Custom Visual marketplace, which was the original intent. Not having another option and not willing to remove the free visuals from the store and all reports, we decided to put the logo to raise the awareness of the problem and ask for the community support.
Once again, we are very sorry if the logo has caused any inconveniences, but we want to provide you more cool looking and productivity boosting visuals and to do so, we need your support. Perhaps, one day all visuals will be free, if MS will decide to sponsor the visuals for all of you (which could solve the problem entirely and provide you added value in comparison to other BI tools).
If you are not able to pay for the visual but you would like to keep the no-logo version for time being, please write to email@example.com and we will send you a time-limited special build without the logo.
Thank you for your understanding,