Question: I want to have my own logo in RSS, not Joomla default logo. Can I change it?

Answer: Yes. To change your image is simple. Upload your desired image with Media Manager in /images/M_images. After that, go to Components --> Syndicate.  In the middle of the page you have a drop-down menu. Click it and choose your image. Don't forget to edit the following line ("powered by Joomla" with your own site name.