This question is because of some close votes due to EOL are wrong - I expect it is quite a lot.
This is a review of a question (admittedly too broad / unclear)- it was flagged as being EOL for being 10.04 - despite the fact that 10.04 server remain supported through April 2015. (I removed it because it was detracting from the actual question)
My suggestion is some sort of notification, when you click the EOL radio button, and before you click the Close button
Could the tool tip display something like this:
EOL (Off topic): 10.04 Desktop, 11.04 and 11.10, 12.10, 13.04 and 13.10.
Not EOL (On topic): 10.04 Server, 12.04, 14.04.
Or maybe, rather than a tooltip, just a message.
Or even change it from having this:
This question is about an end of life Ubuntu release...
This question is about an end of life Ubuntu release: pre 10.X, 10.04-desktop, 11.04, 11.10, 12.10, 13.04, 13.10. The following are still supported: 10.04-server 12.04 or 14.04...
That would be better than it nagging. It could maybe only appear depending on keywords?