There is no backup strategy that fits everyone.
While we all have computers and laptops, we don't all have the same storage capabilities. For one, doing free uploads a lot to the internet with a website Dropbox is a solution. For another, it costs too much to buy an external disk. In another case, we need a whole network of home users backed up. And so on...
I agree that because of this, you have closed both questions for being not constructive.
There are backup tips that could be applied to most occasions.
In How to store and preserve lots of data? we see some of these, namely "multiple copies, try a restore, consider measuring reliability, try keeping it secure, ..." which is actually useful advice which I could actually directly apply to my backup strategy, if I had one.
Should we put lists of possible backup strategies in a tag wiki, or ...?
It could be possible to put them in a tag wiki, but consider that that could possible clutter the tag wiki with way too much information. We should however try to only mention the well-known popular programs and services and then just mention links to sites that return alternatives, like Wakoopa / Alternative-To / ...
An alternative is to write an article for the blog, at our Wordpress Dashboard (and now at our Trello) we have had an empty draft titled Backups, better to be safe than sorry! for quite a long time. And it would be interesting to house the different software and service strategies under a title "What are popular software and service strategies for backing up?" and then do a second paragraph like "When trying to implement a backup solution, which things could I keep in mind?" referring to the backup tips.
