Excellent idea, well done! Rated 5 out of 5 stars
I had the same idea some weeks ago and wanted to start coding the extension right away. Luckily I found this before. So I am very happy that you were faster, having the extension already done. And it works like a charm. Thank you!
It is not only very easy to use, but also demanding very little resources. Think of other extensions which perform unnecessarily a whole webpage scan while trying to find a linkification target... what a waste of power.
Text Link may be a real time saver too, but in any case it lets you take those annoying text links at ease.