What causes this bad signature

[Sebastian Wiesinger]

* david at gbenet.com <david at gbenet.com> [2015-11-15 03:06]:
> You can only use this signature for signing (not encrypting) and for certification. Bad?
> There appears to be nothing bad about this public key - why would you get 16 people to sign
> a key if you were not going to communicate with them?

Hello,

my key is not bad, the signature by 0x5E5CCCB4A4BF43D7 is bad. The
question is why.

Regards

Sebastian

-- 
GPG Key: 0x93A0B9CE (F4F6 B1A3 866B 26E9 450A  9D82 58A2 D94A 93A0 B9CE)
'Are you Death?' ... IT'S THE SCYTHE, ISN'T IT? PEOPLE ALWAYS NOTICE THE SCYTHE.
            -- Terry Pratchett, The Fifth Elephant