If you couldn't find a mod in google by its acronym it's simply because the mod itself didn't get enough attention by the community.
Again, I direct you to escog. Never used that much but sill in the first page on Google.
The issue with acronyms is that when the only place they are really used is here, they don't come up on Google. If authors called their mod the same name as the acronym, lets say they uploaded it to TESNexus as XYB, it is highly likely it would list highly on Google. OBSE is fine as I can find out quite easily what it is (if I didn't already know). Some things are just obscure though.
Well without sounding horrible, that's your loss. Generally signatures are pretty useful areas for modders to advertise their mods.
Meh. I filter ads out, I never read them, they ended up taking up space, turning them off seemed like a good idea.