Even in these topsy-turvy days of global warming, nothing foreshadows the end of winter quite like spring training and the domu ad campaign.  Once you catch that first glimpse of a local Chicago landlord or tenant on the side of a CTA bus, or inside an el train, you can be certain of one thing: Rental season has begun.  And just like that, domu is rolling out yet another flood-the-zone marketing campaign to remind both landlords and tenants that the fastest, cheapest, and most efficient way to rent your apartment (or to find an apartment for rent) is to list it (or search for it) on domu.  This year’s campaign emphasizes the wide diversity of apartment amenity preferences and the ease with which those preferences can be searched, filtered, and satisfied on domu.