Hi Sury - Flickr have changed the interface and they have tried to enforce their regular terms and conidtions about how we share images posted on their site. (Apparently if you post a shot hosted on Flickr you are supposed to indicate that it is on Flickr.) The latest process seems to work like this.
1. Chose a photograph from your stream (i.e. click on it)
2. You should see two buttons at the top of screen, "Actions" and "Share This". Select "Share This" and then "Grab the HTML/BBCode" in the drop down list that appears.
3. Select the size from the size option box (Large normally falls within limits here), and BBCode, and then select the html code from the box shown.
4. Cut and paste it to your post here and there you go. However as it is now full of links it reduces you to two such images per post.
This has made me seriously reconsider Flickr for hosting. There are some interesting groups on it and I like the geo tagging (useful for finding local places to photograph), but these conditions seem a pain. (I also seem to remember that David has concerns about the misuse of images that are posted there.)
Hope this makes sense

Nex 5, Nex 6 (IR), A7M2, A99 and a bunch of lenses.