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##Rate Limit Rationale

##Comments

• Voting
  • 5 seconds
  • no limit for ♦ mods
  • timer resets
• Deleting (treated like voting)
  • 5 seconds
  • no limit for ♦ mods
  • timer resets
• Creating
  • 15 seconds
  • 5 seconds for ♦ mods
  • timer resets

• Editing
  • 5 seconds; comments cannot be edited after 5 minutes

##Searching

• No rate limits for humans

##Asking

• Users < 125 rep, 20 minutes
• Users < 10k rep trip Captcha if more than once per 60 seconds
• Users > 10k rep trip Captcha if more than once per 30 seconds
• On SO, SU, SF and Math (not active on all other sites)
  • maximum of 6 questions per day
  • maximum of 50 questions per 30 days

Sorry, you are only allowed to ask 50 questions in a 30 day period

##Answering

• Users < 125 rep, 3 minutes
• Users < 100 rep can't answer their own question for 8 hours
• Users > 125 < 10k rep trip Captcha if more than once per 60 seconds
• Users > 10k rep trip Captcha if more than once per 30 seconds

##Accepting

• All must wait 15 minutes after asking to accept
• All must wait 48 hours to accept own answer

##Editing

• 5 edits on own posts per day, more for high-rep users (scales with reputation), does not apply to ♦ mods

You have already edited 5 of your own post today; futher edits are not allowed until tomorrow

• 5 deleted old answers per day (not sure if this is counted along with edits or separately, confirm/refute), does not apply to ♦ mods
• Unregistered Users can't suggest edits on posts < 10 minutes old
• Users < 10k rep trip Captcha if more than once per 30 seconds, or faster than 5 seconds after starting edit
• Users > 10k rep trip Captcha if more than once per 10 seconds, or faster than 5 seconds after starting edit

##Reviewing

• 20 reviews per queue per day if the queue size is less than 100
• 40 reviews per queue per day if the queue size is 100 or more
• No review limit for ♦ mods

You have no more suggested edit votes today; come back in x hours.

• load close dialog every 3 seconds

##Chat

• 1 second between two messages, here's the true throttle curve

• There is a similar throttle for starring (details unknown)
• There is a similar throttle for searching (details unknown)

##Voting

• 30 votes per day +10 for questions only (Q only votes can't be used after 25 votes cast on answers)

##Changing Usernames

• Once per 30 days, 15 minute grace period. Does not apply to ♦ mods.
• accounts < 2 days old can freely change name

##Showing Upvote/Downvote totals

• once per second

You may only fetch vote counts once every second

##Deleting

• 5 of a User's own posts can be deleted by them per day
• 5 delete votes (at 10k) with an extra delete vote for every 1k rep above 10k, max of 30, per day
• A question can't be voted to delete until 2 days old, unless 20k+