We all know that Relative posts makes good for wp sites.. it increases Page views & decreases bounce rate. That heps very much For that "Yet Another Related Posts Plugin " is the best plugin so far Admins plz change post name. spelling mistake in it
Actually I've seen better results (both by actually having people check out other posts within the site AND related content) using Nrelate (http://www.nrelate.com). Also it gives you another monetization option and/or allows you to link within sites WITHIN a blog network if you have multiple sites. Worth checking out if you are looking for a related posts plugin if you haven't seen it yet and are looking for the 2 extra features I mentioned above.
I would not necessarily agree with your observation. I have used several plugins including YARPP but the plugins which show related posts with thumbnails work better for me. Some even use Linkwithin to get the same results but wordpress itself has many plugins which show related thumbnails. If you dont have images on your posts then YARPP is the solution but if you use images then plugins showing thumbnails too work better.
Going to completely agree with Waziuz. I actually used Linkwithin prior to Nrelate and had a huge increase in internal traffic when switching to it (I believe from YARPP actually, that's been a year or two now.)