This page has the following description on it:
signature key - public key cryptography can also be used to electronically sign messages. The private key is used to create the electronic signature, the private key is used to verify the signature. In many cases separate public/private key pairs are used for signing and for message security. The former are called signature keys.

Shouldn't it say that the private key is used to create the electronic signature and the public key is used to verify it?