So now you may be thinking why I say you should be updating old content and it is quite simple really.
1. Your Content Could Be Outdated
So you wrote a post a year back and things have changed, this means your post is not relevant. Anyone that lands up on your post will leave quickly or have the wrong information. This does not look good for you!
Updating your content will make your visitors experience on your website better.
2. You've learned new skills
When you first started your website you probably didn't have many skills, sorry I don't mean to be ugly here. Maybe a better way to put it is that you've gained skills since you started your website :)
This means that your old content is not ranking as well as it could.
It also means that your users experience on your website will be oh so much better if you apply your new skills to your old content.
Perhaps you've just watched one of Jay's awesome webinars and you now know some really kick-ass ways to get your content ranked? Well go back and add those things to your old posts, you will be amazed what this can do for your rankings!
I did some new training at the beginning of this year and I updated 3 old posts in one week.... and yes I got page one rankings!
3. You've hit a writers block!
No problem, make some great changes to an old post then republish it... you're readers have something "new" to read and keep them interested. I can promise you that this can seriously come in handy!
4. Google will love you for it
Yes that is right. This shows Google you love your website, you update old content and make sure everything is current and new.
What's not to love?