If you use the Firefox browser (the best browser ever!) and Google Reader to keep up to date on your blurfing, check this out - BetterGReader. It's an add-on for Firefox that lets you preview the blog post right in Google Reader - header, background and all - without having to click through to the blog itself. This is very useful for those blogs that don't provide full feeds of their posts. But the coolest things about it, IMHO, is that you can also COMMENT right there in Google Reader in Preview mode. How cool is that?? I know! I use it every day now, and am so glad to have found it (by way of Jay at Indigo Inklings, thanks, Jay!), it just makes my life easier and I may even become a better commenter. I'm a lurker, mostly.
Check it out - it's easy to install, it pretty much does it for you. It's also easy to use and I haven't found any bugs in it yet. Enjoy!