As we've acknowledged it's a Giveaway blog, here's my Feedback:
+ Use Tags in your posts (ie. Antivirus, Backup etc)
- Enable the Tag Cloud plugin/widget
+ Categorise by Vendor name (ie. AVG, Norton)
- Easier to find products by name.
You are right, some posts do not have tags. Will work on it.
I have now enabled Tag Cloud Widget but what do I add there?
Will try to categorize the giveaways by vendor name but won't the list be too big eventually?
You'll need to check the Wordpress Help files or Google it.
No, because a single Category called "Giveaways" isn't no use to the visitor, example; when they're looking for a product called Avira, no category for Avira = lost a visitor.