No, you ain't

There are two ways to post pictures:
- Insert picture
- Attach picture
To insert a picture you have to have a hyperlink to that
externally stored (on a webpage or a file storage) picture. This link is then put in an
img tag when editing a post. You can type this tag manually, but it's more convenient to use an
Isert Image button above your post text window.
To attach a picture you open up
Additional Options (below your post text) and then select and attach a file (i.e. picture).
The difference is that inserted pictures are placed inside your post in their full size but attached pictures are placed at the end as small previews followed by fullsize picture hyperlinks.