The only error I can see there is that your IP may be blocked on 2 search engines, though this is probably because it didnt serve any results. You can deselect those search engines if you don't want to see that error.
As for email accounts, of course you will need them if you want SER to sign up for any accounts. You needed an email account to sign up for this forum right? Or for a wordpress blog? So does SER, for exactly the same reasons.
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As for email accounts, of course you will need them if you want SER to sign up for any accounts. You needed an email account to sign up for this forum right? Or for a wordpress blog? So does SER, for exactly the same reasons.