These are examples for my county but can be adapted everywhere.
1 Someone is trying to find their dog
2 Someone reports seeing a dog
3 Someone shares another's post about seeing a lose dog
4 Someone is trying to catch a stray
5 Someone sees a lose dog and does not bother to mention it.
There are dozens of dedicated groups involved in search groups.
Within a multitude of community groups, someone is posting about dogs.
If you find other petfinder groups people use in Fairfield County I will add them to the spread sheet.
Those who post this information are great. After I point out things that do not work great, then share my ideas how to make a better mouse trap.
In a social media group, you might have members from any place in the country.
Facebook example. You have 200 fb friends, 15 read your post, 5 live within a couple miles of where the dog was spotted.
People do not read everything in the threads. If they have stuff gone they may never see that post.
I started a google spread sheet, if you have more search groups I can update it. Spreadsheets are great because they can be sorted easy and weed out dups