Finally, before you apply for a job, google yourself. A quick search will show you what pops up when someone searches for your name. If there are any results that you wouldn’t want an employer to see, trace them back to their posts and delete them.
It seems unfair to police yourself in what should be a place where you should be able to let your guard down. If you have issues maintaining a clean and professional profile, you might want to consider a secondary account. Obviously this account should not be associated with your name.