Yes for sure! I have just recently found out that my sister has been in and out of anti JW sites now for the past two years. I had never brought up my involvement due to worry that because she hadn't officially said she didn't believe in the religion that she would stop talking to me due to my apostate site involvement.
One evening not to long ago, we had a sister bonding night and got talking about various things, I bravely brought up the UN thing about the religion, and that started a whole new conversation, as she said.. omg.. yes I already knew that. Then she went on to tell me all that she had read, and learned. Although we had always been close before, this evening of conversation brought us even closer.
My sister has been more or less inactive for quite a few years now, and it was from her reading these factual topics that helped her move on. So yes, even though many may not respond to posts, they are reading and evaluating the topics they are reading.
LTF