If you want to ask a question, start a discussion or update other workspace members, the best way to do that is to add a post to your workspace's feed.
Posting on to your workspace feed
Firstly go to the relevant workspace. You will find the posting box below the workspace activity summary.
Click into the text box and it will expand, now add your message.
If you want to add formatting to your post click on the 'Advanced Editor' link above the text box. You also have the option of attaching files.
Now decide who you want to notify of your post. The default is to notify 'All Member' but this can be removed by clicking on the X. To add individual members type their name in the box or select their name from the drop down menu.
If you don't select any names the post will still appear in the feed so that workspace members can see and add comments the next time they login.
Adding comments to posts
Click the 'Write a comment' link and a text field appears.
After you have added your comment you have the option to attach, or drag and drop, files into your comment.