It doesn't do anything to the thread really. But here's what I know:
Onyi- wrote:Help me, someone can tell me what is mean of this each logo?
= Nuked, mostly threads that need to be locked by mod (like "question" or "mixed skins" kind of threads usually has this icon).
= "I want to ask about ___?"
, , , = Modes
You can ignore the , , , , , and cuz' They should only used in the Beatmaps forum, not in Skinning. The Hearts picture sometimes used as "I like this!" though
tl;dr just ignore those icons. It doesn't really affect anything in Skinning Sub-forum (but It does if you browse the Beatmaps Sub-forums).