Check for low-quality links

[fosslinux]

Each section needs to be checked for low quality links that:
a) are not awesome
b) low-quality
c) very little information
d) removed/dead link

Do this in sections:

• General Search
• Main National Search Engines
• Meta Search
• Specialty Search Engines
• Visual Search and Clustering Search Engines
• Similar Sites Search
• Document and Slides Search
• Pastebins
• Code Search
• Major Social Networks
• Real-Time Search, Social Media Search, and General Social Media Tools
• Social Media Tools/Twitter
• Social Media Tools/Facebook
• Social Media Tools/Google+
• Social Media Tools/Instagram
• Social Media Tools/Pinterest
• Social Media Tools/Reddit
• Social Media Tools/VKontakte
• Social Media Tools/Tumblr
• Social Media Tools/LinkedIn
• Blog Search
• Forums and Discussion Boards Search
• Username Check
• People Investigations
• E-mail Search / E-mail Check
• Phone Number Research
• Expert Search
• Company Research
• Job Search Resources
• Q&A Sites
• Domain and IP Research
• Keywords Discovery and Research
• Web History and Website Capture
• Language Tools
• Image Search
• Image Analysis
• Stock Images
• Video Search and Other Video Tools
• Radio and Podcasts Tools
• Academic Resources and Grey Literature
• Books and Reading
• Geospatial Research and Mapping Tools
• News
• News Digest and Discovery Tools
• Fact Checking
• Data and Statistics
• Web Monitoring
• Bookmarking
• Startpages
• Browsers
• Offline Browsing
• VPN Services
• Note-taking
• Annotation Tools
• Writing and Office Tools
• Slide Show and Presentation Tools
• Digital Publishing
• Newsletter Tools
• Digital Storytelling
• Infographics and Data Visualization
• Image and Photo Editing
• Productivity Tools
• E-mail Management
• Document and Reference Management
• PDF Management
• OCR Tools
• Cloud Storage and File Sharing
• Web Automation
• Dashboard Tools
• Wikis
• Collaboration and Project Management
• Communication Tools
• Calendars and Scheduling
• Mind Mapping, Concept Mapping and Idea Generation Tools
• Social Network Analysis
• Privacy and Encryption Tools
• DNS
• Other Tools
• OSINT Videos

Also see #79 for more to do.

[ghost]

FYI. Mapbuildr has dead link as of today.
"Domain not found"

[PZiwey]

i marked some dead links in Twitter Area, or should i delete them instead of marking

[quinnr]

#274 proposes removing "Battle of the Internet Giants" as it does not seem like a useful source/I couldn't find information that would be useful to refer to regularly on the page.

[quinnr]

See #285 removing 129 links, 127 defunct and 2 not open, and fixing 2 broken links.