Write to Organic groups I need option like on Facebook groups to publish something in group, and then user comment that.

Now i have only comment form which users use to post in groups.

I need something like posting nodes, but in group.

Is this possible?

Thank you!
You can allow any content type as content in the group. So if you want to set post in group you can edit post content type and make as group content.

When you edit the post content type usign admin>structure>content types>post you will find the following options to add this content type as group option.



After doing this when you  visit post create page you will find group select box. From here you can select the group.