iso is a mess. It contains all kinds of questions with the only common denominator that the International Organization for Standardization was somehow involved in specifying something that relates to the question somehow.
- dates (iso8601)
- encodings (iso-8859-1, ...)
- CD-ROM image files (iso9660)
- ISO C++ (c++11?)
- typos on "iOS"
- ISO 8583 (iso8583)
- film speed
- actual questions about ISO (probably the closest to a correct use of this tag)
Most of those have (or should have) one or more more concrete tags that should be used (as noted above).
All in all, I'd say the tag is about as useful as computer.
I'm not saying it should be burninated, but ...