Which forum for what?

[ArchDoomer]

Hi. I (like many here too) use the following three sources for great mods, addons, resources, etc.: moddb, doomworld and the forum here (zdoom). However, I keep noticing that there are different things from the three different sources. I know that this is a weird question, but still: what are the experiences here, which "source" is the most up-to-date? And in general: why two almost identical forums (doomworld and zdoom)??
Greetings out there

[axredneck]

This forum is mostly about GZDoom while DoomWorld is about Doom in general, and ModDB is about mods in general (for different games, including Doom).
I usually look for Doom mods at DoomWorld.