With each major release of iOS, it seems that we grow a new tag. As of now, we have ios, ios4, ios5, ios4.3, ios4-2, ios-sdk-4.3, ios-3.x, ios4.1, ios32, ios4.0.1, and a handful of others that are unused.
It would make sense to collapse all of these as synonyms of ios. First, the additional tags mean that questions are effectively lost to the experts unless they happen to search for the additional tags.
Secondly, the iOS development program is such that developers very rapidly embrace the latest production version of the SDK. Applications submitted upon the production release of iOS must be, at the least, compatible with the newly released OS.
Thus, the version specific tags are not very useful in and of themselves and that they cause questions to effectively be lost makes them a liability.
I tried suggesting synonyms, but it appears that only moderators can do so for version specific tags.
Fair enough -- I don't know what the policy is beyond said synonym interface. Thus, this question; should the version specific iOS tags be collapsed into just