This is your thread, twenty a day is normal, over 10,000 but only a few hundred online any time, three times as many visitors.
These threads get checked by a few meet and greet types, me for one. They stay on the first page for about a week. More will check in.
Most will just say high and welcome, unless you tell about being a left handed chellist who is looking for a left handed quartet. Personal info works. Not a lot of use posting on the new threads, 90% are never seen on the boards, they join to get open access to the site.
There is a more active core of regular posters. Some have 10,000 posts, some only a few hundred.
Find a subject of interest and you can see how many total post each has. If you like what someone says, their words reach you, click profile at the bottom of their post, and where it says all posts, click and the lat ten will come up. This shows what other forums they post in, and what they said, click on the links and go to the thread. Asking for information in a thread, a subject thread, where regular posters post will bring replys.
Aspies are known for being know it alls. So if you go to a painting thread, say anyone into acrilics? You will get answers.
People have lives, England is 3 am now, Austrailia early morning. Workers post before and after work, the pace picks up on weekends, aspies never have friends, dates, or leave the house. Just a joke. I went out for groceries just last month.
If people like your posts and subject matter, they will look for your name. After showing up on the same thread several times you might send a Private Message, some questions, complaints, do not belong on public threads, we do have kids, personal attacks are not allowed, that is for when people know you.
Due to the roundness of the planet there are lags, give it a week to get through a cycle. It will take a month just to see who shows up on what thread.