Ask HN: How many http redirects to follow?

I'm doing a "share box" where users can enter a link and the app automatically scraps the URL to get a thumbnail and some other info. My question is: What would be a good number of http redirects to follow until giving up? The library I'm using has a default limit of 10, but I just realized some sites are doing more than 10 redirects. Take for example this curl command:

# This doesn't reach the final content

curl -L --max-redirs 10 http://www.nytimes.com/2012/03/10/world/americas/bernardo-pazs-inhotim-is-vast-garden-of-art.html?_r=0

# Increasing the --max-redirs to 11 works

curl -L --max-redirs 11 http://www.nytimes.com/2012/03/10/world/americas/bernardo-pazs-inhotim-is-vast-garden-of-art.html?_r=0

Can I just set a limit of 15 or 20 without affecting in a negative way the performance of my app?