YezYes, when referring to anything Joomla related, its always best to include the version in your question. I have seen a lot of people add the version specific tags and when answering the question, they have replied saying they're using a different version of Joomla, therefore I think if one manually types the version in, there is less room for mistakes.
Personally, I hate the version tags with a passion as when I check to see if there are any new questions, a lot of people dont use the generic Joomla tag and use something like joomla3.0
, so having to check multiple tags for new questions is a pain.
So overall opinion, scrap the tags and include the version in the actual question.