Follow-up: Rate-limit + Backoff For Explorer Requests

Follow up (third-person singular simple present follows up, present participle following up, simple past and past participle followed up) to take further actions remaining after an event; To retrieve follow-up documents with higher reliability by preventing those documents which cannot be follow-up documents due to time factor from being judged to be the follow-up documents. People follow leaders and they will never follow us.

When a new user joins weibo, he should register weibo and get a unique id, and then he takes some existing users as his followings and waits for others to follow him.