What does blanding mean in any culture or language?
I found one reference for "blanding" in a list of buzzwords or potential lingo:
blanding: Branding schemes that strip out any uniqueness in a corporate identity in order to appear to a larger audience. The resulting look: bland.
It appears to be a variation of "bland" to the extent that it means some amount of "blanding" has occurred and the result of the blanding is a bunch of stuff that is now bland:
They are busy blanding our website.
I would advise against using this word anywhere outside of causal conversation. Wait a year or so and see if it catches on.