We've operated under many different brands, but have been consolidating under the brands which seem to be the most appealing.
Since we have the .com, .co.uk, .net, .info, .me, etc for each of the domains, as we have let them go I get emails like.
Dear xxxx
I have recently purchased domains blahblahblah.net and notice that you have many similar, I could let you have this for as little as $500+
If I find myself with spare time, I write back and say. Oh, yes, that was my domain that I let go, I can sell you the other 5 for $2500+ if you like.
I never hear back!
Hahaha! I forgot about these, I get them frequently as well. Either the names that I let drop myself or the ones that are close in spelling, or just other TLDs of the ones I own (I almost always retain a .com of the name if I were to drop other TLDs).
A couple of times I replied saying that I own a .COM which is more than sufficient for my needs, later to find out they dropped the name as well.