The biggest reason why I chose to use the openwrt firmware was because I was looking for a way to be able to selectively block websites, mostly to be able to block tracking and advertising servers for privacy reasons.
Frankly, I am tired that I was not able to see who was collecting what, without my knowledge or approval.
I do use applications like the adblock plus, but it does not work on all internet browsers, also that devices like ipads, tables and phones on the wifi are not able able to easily block this traffic.
So, after a lot of research, I loaded the openwrt and been working on it getting my openwrt router to do the work of blocking thousands of tracking, advertising and spyware servers.
I am so happy with the results, that I wanted to share what it was that has worked so far.
I have done comparisons of speed, and by making this changes most websites load faster, but I think the websites are loading faster because background connections to 3rd party tracking servers are being rejected.
You can't block everything, but by following this steps you can block most of this unwanted traffic.