Mother's Day is less than a month away, and it seems Facebook is hoping you'll consider giving your Mom a Portal or Portal+ to keep in touch with you -- it's running a Mother's Day sale on the smart displays. Until May 12th, Portal will set you back $99 instead of $199. If you decide to pick up a pair of them (maybe, possibly one each for you and Mom), you'll get $200 off, as long at least one is the larger Portal+.