Rider:
How to get rid of annoying biiiiig attached images, lol....
No problem. We should take care of it, not you :) Just for any case... you have to provide just [imgs] tags with a comment, not embed them with [img] tags. That provides a mess. In general, that just means you have to copy/paste the exact code which comes from uploading (File Bank) and not add anything else. That's pretty simple, to not add anything else, I guess... and hope :)
Rider:
I am playing with the stylesheet in version 3.0.3
You're a bit late on it, 'cause we now have 3.1 version and everything should be started from it. Anyway, in most cases 3.0.3. stylesheet should be compatible with 3.1, but you also need to think about security.
Rider:
I managed to suppress it in most areas, but in one area I can't because I can't find the place where the code is.
In the case you provided, it should be about
templates/main_topics.html.
I hope you could search for all <br /> tags and find the proper one you should remove and/or adjust.
Let me know if it helped.