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blocking questionable links

How do sites like furl, delicious, stumbleupon, etc keep out unwanted links to questionable destinations? Do they have a blacklist for websites that are no-no such as porn sites, etc? Is there even any legal ramifications for having links to such sites?

I'd like to create a small web portal and I will allow users to bookmark websites. I am guessing moderating these bookmarks will possibly come up as an issue and I am not sure how to tackle it.
Thursday, May 15, 2008
Most use a blacklist which has problems for sites like tinyurl.  A couple even blacklist numeric IP addresses which causes a problem for cached google pages.

There is obviously no way of 'solving' this problem - how do you define, legally or in code, a questionable site.

ps Please don't block it based on downloading the page and look for naughty words - the people of Scunthorpe don't like it.
Martin Send private email
Thursday, May 15, 2008
Let your users moderate them.
Thursday, May 15, 2008
Maybe you could tap into an existing database, like OpenDNS does:
D. Lambert Send private email
Thursday, May 15, 2008
"Let your users moderate them."

Daniel_DL Send private email
Friday, May 16, 2008
> Let your users moderate them.

That just doesn't sound right for a paid service though.
Friday, May 16, 2008
If it's a paid service, you need to provide something that users can't get from a free service... such as moderators who are employees rather than users, perhaps!
Sunday, May 18, 2008

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