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I want to write an addon/extension/script that allows me to hide specific parts of a website and remember these preferences. The next time I visit the website, this content should be hidden from me.Is there any way to do it?

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What browser are you using? Greasemonkey sounds like it might be what you want if you are on Firefox. – ChrisN Dec 29 '12 at 2:36
@ChrisN: Greasemonkey allows userscripts for firefox. Userscripts are supported by chrome and opera by default, so every modern browser should be fine. – nixda Dec 29 '12 at 2:58

What you are looking for are userscripts. has a collection of scripts for Greasemonkey on Firefox that may possibly work in Chrome or Opera.

If you want to write your own, here are some resources:

One thing to note for Chrome: It seems Google has pulled support for installing userscripts except from trusted sources.

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thannx man for the sources. – Captcha Dec 29 '12 at 11:51

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