It's back! Join Sittercity.com and take 50% off your one-month membership when you use code SUN50 at checkout. The one-month membership drops from $35 to $17.50, (the annual membership lowers from $70 to $52.50). This matches their largest discount ever so if you were considering joining, now is a great chance. Whether you offer childcare or are looking for a reliable babysitter, Sittercity enables a selection process that includes things like background checks and references. It also posts senior and pet care providers, nannies, house cleaning services, and tutors. You can try the membership free for 7-days.