For example, a 'What's new' list on the home page should display recent site changes yet unseen by the user, but a video that I posted didn't show up here, nor did new comments about photos.

比如说，主页上的“最新消息”(What' sNew)一栏本应显示用户尚未看见的网站更新内容，但是我上传的一个视频文件在这里就没有显示出来，新加的照片评论也是一样。