Posting graphics to a Conversation ...
The forums were not designed to show images and as a result the "insert image" button is not present in the editor's toolbar. You can however drag an drop an image from another web page, which creates a link to the image inside your posting.
Be aware that if the image is removed from wherever you found it, it will also disppear from your posting. It may be useful for appending images to the end of a post, however it's not going to be very good at embedding within the middle of a post or flowing text around the image.
Ok, Update!
I've hacked the editor back-end, one can now add images to posted by clicking on the little "tree" icon in the toolbar. A dialog box should appear, click on "Home", then "Members" then your id, this will put you in your own space.
Then click on "Upload Here", a new section will appear on the right, click browse and select the image on your computer that you'd like to show. Enter a title for the image, then scroll that box down and select left or right justification, then click Ok to upload the image.
Extras! - instead of uploading an image you can easily pick an existing image from the site by browsing to the desired image rather than clicking on "Upload here". I've created a folder containing a few usable images, you can view them in a browser by clicking on this link.
Inside the editor / image browser, you navigate to "Home", "Members", "gareth", "Forum Icons".
If anyone needs any more similar looking icons I can grab some extras on occasion, not that I want to spend all my time doing this .. 
OK! [Subheading]
I've also enabled styles .. now I'm not sure if this leaved postings open to abuse by posters (!) however it does give the user more control, in particular with regards to handling replies and the text it includes with the blue stripe down the left hand side. [Normal]
Let me know if this causes a problem ... [Literal]
There are lots of different styles available, as per the ones available when editing pages ... [discreet]
Nice to be able to put something alongside your post ... [Pull Quote]
Although you need to be a little careful about how you use pull-quotes, make sure they're not the last block of text on a page .. i.e. type your quote, type something after it, then select your quote and then select pull-quote from the editor's style menu.
This is nice for indents ... [Call out]
- Still not sure why the editor removes bullet points when you save an item
...
The thing to right is some text marked with the "button" style and a
hyper link (the chain icon) to the home page.
Previously Gareth Bult wrote:
The forums were not designed to show images and as a result the "insert image" button is not present in the editor's toolbar. You can however drag an drop an image from another web page, which creates a link to the image inside your posting.
Be aware that if the image is removed from wherever you found it, it will also disppear from your posting. It may be useful for appending images to the end of a post, however it's not going to be very good at embedding within the middle of a post or flowing text around the image.
Gareth - thanks! However, there are times when just including a URL might be preferable, eg the picture of an insect which I linked to yesterday. The reason is that the illustration is from a book which is still in copyright, but out of print. If the publishers did happen to notice the link (very unlikely!) they would come after me (via the image on my flickr hosting site) and not you or TARS. What I usually do in these cases is leave the link 'live' for a few weeks, then remove the image from the host site to be on the safe side.
Thanks, Gareth.
I guess anyone loading images this way needs to take care to select the image size? When I put these up it offered the original image size by default (ie 128 pixels height)
That might be what people want at times, of course. But it's worth knowing there is a pull down list offering different image sizes. This offers from 16x16 pixel:
To 728 x 728 pixel, although the software does seem to limit the actual displayed size to that of the original image, thus:
I presume that's right? Please do correct me if I've got it wrong.
In the meantime
It does look as though call-out style is working (above), but I'm not sure about the pull-quote? I tried it in another post as per your instructions, but it didn't seem to work?
Previously Gareth Bult wrote:
I've also enabled styles
Mmm, "original size" is enabled globally, so if you try to add a graphic too large for the page then the page will break. (i.e. common sense / a little net savvy required)
If it's a problem I can disable the original size feature and allow only specific sizes, unfortunately this is site-wide and will prevent the choice currently available.
.. pull-quote does work as above, however the style uses "float:right" so it's not that easy to predict / use if you're not overly familiar with HTML. Easy answer, if it doesn't do what you want, just avoid it ... 

