The easiest way to attach anything to your message is to use e-mail interface. This way you just attach anything you
want to your e-mail to adda-d...@googlegroups.com and it automatically appears attached to your post on the website.
However, if you're not subscribed to the group you can only start new threads this way (as far as I know), but not
participate in existing ones.
To participate in the existing discussion by e-mail you need to have a last message from this thread in your inbox. Then
you just reply to it and it gets automatically positioned to a corresponding thread by Google. To have it in your inbox
you should have been subscribed to the group or at least to the particular thread (you can do it when viewing the thread
in the web interface) at the time when this last message was posted. While this is a good motivation to be permanently
subscribed to the group (you may use digest subscription to minimize traffic), it doesn't help you if you are a newcomer.
In the latter case you may try the following workaround: 1) subscribe to the group or to the thread; 2) post text-only
message to the chosen thread using the web-interface - then you should receive a copy of your post in your inbox; 3)
reply to the latter in your e-mail client attaching the files. I haven't done this myself, so if you try please comment
on the result.
Coming back to the web-interface - it is possible to post images as well, but it is done not exactly how you may expect
it. Instead of attaching files to the post itself, you may upload files to the group
http://groups.google.com/group/adda-discuss/files and then refer to them in your post. But you have to join the group
(possibly without subscribing to it) to upload files. The interesting thing is that when you attach files to the
e-mails, as discussed above, they do not appear in files section of the group.
Maxim.
Actually, I did try this simpler approach and it did not work. A new thread was creating with the same subject, which I
deleted afterwards. It seems that for matching not the subject but headers like "References" or "In-Reply-To" are
used, which are not visible on the group web site. So these headers can't be easily "forged".
Maxim.
In other words, the workaround for posting attachments through the web interface, which was discussed in previous
messages, is no more operational.
Maxim.