A problem that a lot of people have when trying to reach out and contact their genetic family via Ancestry and other similar sites is that the family members that they are trying to reach out to don't check their accounts very often.
This can be really frustrating for a person who is trying to discover their family.
Here are some tips that I have used to try and find the family that I am looking for. I hope that these will help you, too!
1. Search the username in a google search, in quotation marks. If the user name is ABC123, I will search "ABC123" to see what pulls up. If I don't get a lot of hits or if I get no hits, I will remove the quotes. Sometimes I get a lot of hits. Sometimes, I am still stumped.
If I am lucky, at one of these posts, there will be an email address or a contact me button. I pretty much know that I have the right person if I find posts by that user name in a genealogy forum or page.
The weirdest one that I have ever looked for? One match only, and it was to a toy boat collector in Europe. Sent an email and heard back from him in less than 30 minutes. He had only taken the test to learn what his genetic makeup was. Never bothered to create a family tree or check back to the site. Imagine his surprise when I united him to a very close family relative.
2. Notice if the user name is a person's name. Some people will just use their name. JohnWSmith, for example would help my search, especially if I had an idea of the city and state that they are in. The more unusual the name, the easier this will be.
3. Notice if the user name gives a clue. JohnWSmithGolferNYC would really help you out in your search. The username JWSNYC tells me nothing, unless there are matches on the initial google search.
4. Make notes of what actions that you take as you go. Nothing is more frustrating than trying to find the great lead that you had, only to find out that you can't find it.
5. IF you decide to send emails, take the time to create the same email in a word processing file, such as Microsoft Office or Open Office. That way, you can merely copy and paste over and over to all of the contacts that you find.
6. Make notes of all of the emails that you send out, and if you get responses, make notes of them as well.
Good luck on your search!