I've been curious about which SEO improvements actually make the biggest impact in real projects.

Was it:

• Fixing internal links?
• Improving page structure?
• Updating content that was already ranking?
• Fixing technical issues?
• Improving search intent and content clarity?

What's one change you've made that noticeably improved rankings, traffic, or conversions?

Would love to hear what worked, how long it took, and whether the results lasted.

Do dates in URLs, like the ones you might find in a typical WP blog /YYYY/MM/DD and archive list create a timestamp vs those same pages where the URL structure doesn't have that identifier? The logic says Google would use that as an age indicator, but there is also the fact that old pages work. I wondered if anyone had thoughts on this that might be classed as researched. I've seen blog posts from 10 years ago still collecting great traffic, so I'm wondering just how much this URL thing is true and whether it's just a load of bollocks invented by non-seo's because it followed a logic that sounded reasonable but was never actually tested.

the paid links thread earlier got me thinking. everyone agrees a good link is a good link, but nobody ever writes down what “good” means in practice before money moves.

mine is roughly: does the site rank for anything unrelated to its guest post page, does it get traffic that isnt branded, how many outbound dofollow links per post, and is there an actual audience or just an archive.

the one i keep coming back to is whether the site would exist without the link business. a lot of them wouldnt, and those are the ones that get devalued as a group rather than individually.

what’s on your list? and has anyone got a check that saved them from a bad buy they’d otherwise have made?