Oh, also I forgot to mention...
If your sidetag is deleted, you can just request a new one, tag the old
builds back into it and be back in business. I realize that that could
be anoying if you told people a specific one and then had to make a new
one, but it's not like those builds are lost.
Good to know :)
I think this info in a delete notification e-mail ("Your side-tag xy was deleted
after 30 days. It contained the following builds: ... You can re-tag them into a new
side-tag with: ...") would solve most problems. And we can skip that mail if the
side-tag has been merged already.
Michael