Probably not the wisest to have a readily available email right there where it's visible. Speaking from my experience as a programmer, it would take just a couple hours to write a bot that can scan webpages for a valid parsable email address. Putting it in a hider can help avoid dumb, basic bots but any decently programmed one will see through that too. Even if the email is a throwaway, putting it front-facing is still likely to attract a lot of spam and I would suggest exchanging it out of public view.