Ricardo Eduardo Martinez, 65

Facebook

Facebook is a popular social networking website and platform that allows users to connect with friends, family, and other people they know or may not know, share content such as photos, videos, and status updates, and communicate with others via text, voice, and video chat. With billions of users worldwide, Facebook has become a dominant force in the realm of social media, offering a range of features such as advertising, e-commerce, and workplace communication.

Twitter

Twitter is a social media platform that allows users to share short, 280-character messages called tweets. Launched in 2006, Twitter has grown to become a popular platform for news, entertainment, and social commentary. Users can follow other users, and in turn, have followers who can see their tweets. Twitter also allows users to share images, videos, and links, and use hashtags to categorize and search for tweets related to specific topics. It has become a powerful tool for communication, public discourse, and social activism, with millions of users from around the world.

Instagram

Instagram is a social media platform that enables users to share photos and videos with their followers. Launched in 2010, it has grown to become one of the most popular social media platforms, with over one billion active monthly users. Instagram also allows users to add captions and hashtags to their posts, follow other users, and engage with content through likes, comments, and direct messages. It has expanded to offer features such as Instagram Stories, IGTV, and Reels, providing users with more ways to share and discover content. Instagram has become a platform for personal expression, brand marketing, and influencer culture, among other uses.

LinkedIn

LinkedIn is a social networking platform that is focused on professional connections and career development. Launched in 2003, LinkedIn has grown to become the world's largest professional network, with over 700 million users in more than 200 countries. Users can create a personal profile, list their work experience, education, and skills, and connect with other professionals in their field or related industries. The platform also offers job postings, a news feed, and groups for discussion and networking. LinkedIn has become an essential tool for job seekers, recruiters, and professionals looking to expand their network and advance their careers.

Reddit

eBay

Pinterest

Flickr

Hi5

MySpace

AOL Lifestream

Flixster

Netlog

Eventful

CNN iReport

Last.fm

Gravatar

Hulu

Formspring

Multiply

Etsy

Digg

LiveJournal

dailymotion

Disqus

Tumblr

Github

Ask.fm

Vimeo

IMVU

Blogger

Smugmug

SoundCloud

Kongregate

Behance

TripAdvisor

Typepad

Pandora

CitySearch

SourceForge

Metacafe

BlackPlanet

PhotoBucket

Tinder

deviantART

Veoh

IGN

PlentyOfFish

Topix

Stumbleupon

Cafemom

Answers

PictureTrail

Ustream TV

Break

Kaboodle

Justin TV

Fotolog

MTV

Delicious

ThisNext

Zillow

Posterous

ImageShack

Friendster

Buzznet