So, 3 sisters now in contact, and one known brother, no contact (yet). All on my bDads side. Trying to read up on how to identify which side people are on based on the tests, maternal or paternal. Getting my science on!
I'm glad you're finding people!
Which site are you using?
I am using both ancestry,com and 
DNA Genetic Testing & Analysis - 23andMe
DNA Genetic Testing & Analysis - 23andMe 
You are meeting people from both?
I did 23&me and Free Family Tree, Genealogy and Family History - MyH... and the closest I've gotten is 3rd cousins. One who was adopted as well and hoping I had information for him.
I've been debating if it would be worth it to do Ancestry® | Genealogy, Family Trees & Famil...
So far, I have only been in contact with people from Ancestry® | Genealogy, Family Trees & Famil.... I have messages out to people on 23andme
someone on 23&me said they would get back to after checking on a side of the family that were "mulattoes" oddly haven't heard back. lol