Question in concern: http://superuser.com/questions/218107/is-there-a-chrome-plugin-to-create-separate-session-in-a-tab/1158105

This is surprising to me for multiple reasons.

1. It's not off-topic but it was *closed*
2. It was *deleted*

Ok let's review the [topics](http://superuser.com/help/on-topic) of SuperUser

* computer hardware
* computer software
* personal and home computer networking

Well the question is specifically about Google Chrome so I'd say that falls under the "computer software" topic.

Ok let's review the list of off-topic content

* programming and software development
* video games or consoles
* websites or web services
* electronic devices, media players, cell phones
* issues specific to corporate IT support and networks
* asking for a product, service, or material recommendation

Well it's a reach, but maybe I could see this as "asking for a product". But that's mitigated by simply editing the question title to something like "How to create a new session in another tab or window in Google Chrome?". The intent is clear in the question body and a plugin is not the only way to accomplish this, so the question title was slightly inaccurate. Any user or moderator could've made this edit with confidence that the meaning of the original question would be kept in tact.

Instead closed as off-topic? It's received a trickle of answers over the years; some good, some bad. I can see why a moderator might *lock* it, but going even further to *delete* it is just absurd.

The question:

* is on topic
* was helpful to many people: 37 up-votes, a single down-vote, and 28,000+ views
* has no negative remarks 

Can someone explain the moderator's decision to me?