Maybe it is because gis.stackexchange.com is only a day old, but the software/database/system tags don't include version numbers. Sometimes the version doesn't matter, but for some questions, it will and I think there have been a handful of questions that already could be re-tagged to a specific version.
On stack overflow, the .net versions are ".net-3.5", ".net-4.0", etc. Visual studio is: vs2008.
For questions that pertain to specific version(s), is there a standard way to notate the version in a tag?
For example: should an ArcGIS 10 tag be ArcGIS-10.0, ArcGIS10? Or is it just what gets used first?