URLs

• https://www.pixiv.net/users/1728611
• https://www.pixiv.net/stacc/cat_xx
• https://twitter.com/ykm_s
• https://twitter.com/intent/user?user_id=1285634257956868096
• https://sketch.pixiv.net/@cat_xx
• http://twitpic.com/photos/ykm_s