On which Channels do you poll your IH news?

I wonder what you guys use for channels to spread your News of your upcoming service/project.

I've seen, there are the general ones like - for sure "here at indiehackers.com", LinkedIn, Xing, Twitter and so on.

I would love to get an overview, which platform or channel are used most.

And are there Tools, which help you to post your news to those pages?

Missing Poll-Entries

If there is any missing one, drop a line in the comments, and I add it (hopefully, I can add entries to the polls if they are in progress... if not, only post them in the comments)