Orbs in Ghost Pictures

Beth recently sent us some pictures with orbs in them.  Orbs can be caused by spirit energy, but also by reflection, dust and sun flare.  In our opinion, the first pic shows sun-flare (solar flare) to the left of the biker; the second pic has little white orbs showing up which were probably created due to reflection of the camera flash; the third picture has an orb either caused by dust or reflection in the building door.  Are they ghosts?  You decide: