[gorhill]

I myself most often write "uBlock" and pronounce "you-block", as in "users decide".

I originally used the mu character in place of the u to emphasize smaller resource footprint relative to similar solutions out there.

I've never been good with picking name etc., unfortunately now we are stuck with it.

[Intermernet]

Don't sweat it. It's actually quite a good name. It works both as "you block" and "micro block" depending on reading the first character as "u" or "mu".