Thankfully, Blogger has made things a lot easier in the four months since my original post, and it's pretty simple to tweak your old blog posts to maximise their effectiveness (I'm using Blogger in Draft; so for some of you these tweaks might not be applicable). What these tweaks will do is help people find your posts better and improve your traffic (and your comments, likes, shares, and general awesomeness as a blogger).
Fix broken images
This is such a big thing. People are far more likely to read your post if you have a picture to go along with it (even if the picture isn't 100% relevant/interesting). A lot of my older posts have broken images because I've just pasted in the image URL from some other site. Once that other site takes the picture down, you lose it too. Always upload images to your own blog. Credit sources where you need to, but always, always host them yourself.
Blogger also lets you add alt text to describe your images too, which helps when people use Google image search to find pictures, leading them to your blog. Type into Google Image Search "blogger logo with wrench" and the first result is the picture you see above, leading you to my original tweaking post.
This is a great way to send some traffic back and forth between posts and to increase their presence. This post is a great example. As you saw, I linked to my original post at the top because it's relevant. What I'll do once this is published is go back to my original post and link to this. Not only will visitors be able to travel back and forth between the two, but giving the older post a link to this new one (which could be more popular because I have more readers now than I did then) will give it extra authority in the eyes of The Internet Gods, making your blog better as a whole.
This also works with links to labels/tag/categories. If I'm doing a general blog post about Terry Pratchett, for example, I'll link to my label so people can read everything I've written a bout him. Doing this enables people to navigate deep into your blog and find good posts that they wouldn't have otherwise seen.
Get with the now
How many times have you changed your blog's colour scheme/template/layout? If you're like me, several times. What I didn't realise is that it can seriously mess up the way your old posts look to the reader. This happened to my Jason Engle fantasy art showcase; it was a mess. Pictures everywhere, broken links to other sites, it looked horrible. So I cleaned it up, edited my text a little to make it sound a little better and I think it's had a positive effect.
[Headshot image source]
[Headshot image source]
Do you have any tips for tweaking old blog posts? If anyone wants any more or more in depth info about tweaking (the bigwigs call it 'optimizing') then let me know!