This is call "website whitelist". Most internet filtering products have this kind of feature.
If you prefer software solutions, I would recommend "WFilter Enterprise".
You can find a universal knife block that will fit all of your knives on this website: http://www.amazon.com/Kapoosh-Universal-Knife-Block-Woodgrain/dp/B000O35PIK. I have one myself and love it!
You cannot block certain elements in a website. For that you will be needing API's of 3rd party applications.
No one would block their website by having to many adds. That would be commercial suicide.
One can check the top ten DVD rentals in the UK on the Block Buster official website and on the LOVE FILM website. On the Block Buster website the DVD rankings are all categorized. In the 'Blockbuster Top 50 section', 'Les Miserables' is ranked first place.
no
You click block website
There are none, if one site slips past the block then the next time you go onto it the website will be blocked because the block can tell what the website is about by the meta tags on it. The site is blocked because you're not supposed to be on it at school.
More information on services provided by H&R Block can be found on the official H&R Block website. On the website, there is a tab that gives information on the services and products they offer.
The software MailWasher can block spam e-mails. It can be easily downloaded from the official website of the software. One must just enter "MailWasher" in google and the first entry is the official website of the software.
u cant
There are a lot of places in order for one to find out software to block one's IP location. However, it is strongly suggested that one should check out the website Peerblock.
There are several ways one can block their computer from visiting dirty chat sites. Perhaps most popular would be parental control programs which block website with certain content ratings.