Useful, let others see more information about you. The top is placed on the home page, or in the front position, and will not be washed away by the new one. If you look at it yourself, it must be ahead, others may not, but the big ranking is definitely ahead.

Sticky Post, or "Sticky ie" for short, as the name implies, is placed at the top;

As the name implies, put it on the top;

Especially BBS forum, because moderators, etc. Have the right to put someone's post in the headline of the forum;

No post can go beyond the position of the published post unless it is cancelled or replaced by a post published later;

Being at the top is a right and an obligation.