Here are a few sites that I go to for sending in requests for myself and on behalf of others. My first Reiki teacher, Judy Oliver, introduced me to The Distant Healing Network and I am a current member with the regular and instant request groups. Should you feel guided to do so, join me as a volunteer.
The Distant Healing Network, the-dhn.com/request.html
You can also submit pet requests to the DHN, the-dhn.com/pets.html