I just tried installing twitpic following
$ ls -l ~/.gimp-2.8/plug-ins/
drwxr-xr-x 3 jjj jjj 4096 Jan 22 13:01 twitpic-gimp_r18
-rw-r--r-- 1 jjj jjj 23075 Jan 21 13:44 twitpic-gimp_r18.zip
jjj@x ~/bin $ ls -l ~/.gimp-2.8/plug-ins/twitpic-gimp_r18
drwx------ 3 jjj jjj 4096 Jan 22 13:01 libpub
-rw-r--r-- 1 jjj jjj 2578 Sep 27 2010 publishr.py
jjj@x ~/bin $
After a restart I can't see the plugin visible.
So then I thought... maybe there's a quicker way?
What I want to do is take a screenshot, upload to a service and then have the link in the clipboard ready to paste to an online forum or an email.
I guess I could write a script for this and use ftp but I wonder if there might be something else out there first. It has to be a common thing. I think the upload programs introduce a few more clicks as you then have to open a paint program first. Pinta with a plugin might be more appropriate for such basic tasks (faster?) but there's no plugins for it, certainly no upload plugins.
So I guess a script and finding ftp hosting and xclip is the way to go