This question already has an answer here:  What is the maximum
number of posts that can be added to favourites list by an user
on a single day?  share|improve this question I don't think this
action is rate limited. Trying to look for a source though. – 
Shadow Wizard Feb 11 '13 at 9:32 4,451,521?. By the time you
read this comment the number will have increased. I wouldn't
recommend it though and the devs might complain. –  ben is uǝq
backwards Feb 11 '13 at 9:33 @ShaWizDowArd, I think it's not a
duplicate, since this qn is about per day –  Azik Feb 11 '13 at
10:04 @Azik but the answer there also answer your question: "no
limit", which also implies no limit per day. Saw that other
question only after answering here though. –  Shadow Wizard Feb
11 '13 at 10:06 anyway I got the answer for my qn –  Azik Feb 11
'13 at 10:09 add comment  marked as duplicate by Shadow Wizard,
hims056, Martijn Pieters, Pops, Toon Krijthe Feb 11 '13 at 13:05
1 Answer  up vote 2 down vote accepted  Not all actions are rate
limited,