Camtasia Studios
I personally use Camtasia Studio 6. The newest version is 7. I have not tested this version out yet, but the price is the same as what I paid for the 6 version. It kicks butt and I highly recommend this software. The best pricing I have found is through Amazon.
The Best Link Tracking Tool For Your Affiliate Links.
Ninja Affiliate is an all in one affiliate link tracking tool. It has many feature built in to the software that works on all blog pages.
This tool not only links the keyword in your blog posts, it also has a built in link cloaker.
Additionally you set all the perimeters in how you want you keywords displayed.
For more information and to watch the video tutorial on this software, simply follow this link to the tutorial page.
There are free plug ins on the market but be careful when using them as they can be unstable and as they say, you get what you pay for. Check out Ninja Affiliate and then Check out the free plug ins.
Then make your decision on based on your own findings. Here is the link to the tutorial page. View Here
Utility Poster
Jack Humphery introduced me to this in early 2010. This is the new version 3.0 I absolutely love it and use it for just about all of my blog posts. It saves tons of time, gives you some killer link juice and is a total gem.
The price is set at $67 bucks. So yep, great investment on this one 