|
Each sitewide link does count, but the way it works is as follows:
A sitewide link won't give you much more juice than one good content link. Because it's not a great determinate of quality. However, if you are competing against a site with say 50,000 backlinks, a sitewide link can help you combat them with in reference to volume. So, they do play a part as far backlinks go, but having quality backlinks is worth more when it's all said and done. The more well rounded your backlinks are, the higher quality of your site. After all, SEO is meant to increase your pages rankings, by simply speeding up a process that should occur naturally, over time, if your site is worth while.
To address the second question:
Google only chooses to show you a certain amount of backlinks, even though they count many more. The reason they have done this is to prevent SEO's from viewing which links they are gaining and which they are not, and therefore teaching them further about how Google's algorithm works. Granted, this isn't the only reason, but it definitely plays a part. If it weren't for Yahoo, then we would have a much harder time trying to figure out which techniques work and which don't.
|