Yamster is a combination, or portmanteau, of the words "Yahoo" and "hamster". A user then questioned the potential trademark/copyright infringement of using such an avatar. The Internet troll Ken M is a regular user on Yahoo!
At that time, the photo was replaced with the Yahoo! At the beginning of 2006, the green smiley face was replaced by the cartoon Yamster clad in a karate uniform. Presidential campaign, Hillary Clinton, John Mc Cain, Barack Obama, and Mitt Romney posted questions on Yahoo! Answers, posting comments that confound and annoy other users.
Studies of user typology on the site have revealed that some users answer from personal knowledge – "specialists" – while others use external sources to construct answers – "synthesists", with synthesists tending to accumulate more reward points. looked at the ego networks of users and showed that it is possible to distinguish "answer people" from "discussion people" with the former found in specialist categories for factual information, such as mathematics and the latter more common in general interest categories, such as marriage and wrestling.
They also show that answer length is a good predictor of "best answer" choice.
Several celebrities and notables have appeared on Yahoo! These users have an "official" badge below their avatar and on their profile page. There are several communities on social media sites such as Reddit and Facebook dedicated to observing his antics, especially on Yahoo!