Accounting Therapy received the fake email below -- be careful as it has been going around recently.  WizAdwords seems to be hoping to confuse people who receive their email into associating their graphic with Google/Google Adwords.  

The email says there is a balance owed for "GoogleSEO for your website" because the service failed to auto renew in your account, and requests a payment through paypal for the amount owed.  

Google operates the similarly named Google Adwords, and the colors are not the same but bare a definite resemblance to the colors use in Google's trademarked logo.  

Here's an example of one of their emails:

It may warn you: "Avoid blocking your website in Google.  5 days left to block."  "Without this service your site does not appear in Google searches."  And similar threats.  

Always be suspicious of invoices sent from a company you don't remember working with.  

Keep in mind there are several ways the scammer try to lull you into thinking it is a legitimate request.  For example the very standard line you can see in any invoice: "If you have already made the payment please disregard this email."