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Re:Ask HN: Why would anyone POST anything in AJAX? by cperciva on Saturday April 18, 2009 @04:22PM (#568693)
Many systems have limits on the maximum length of a GET query string, since said strings form part of a URL. In most cases these limits are quite large (4kB or more) but I've seen systems which can't even handle 1kB URLs.

If you want to send a large amount of form data and not have things randomly break, it's a good idea to use POST instead of GET.

Re:Ask HN: Why would anyone POST anything in AJAX? by jamroom on Saturday April 18, 2009 @04:30PM (#568702)
Internet Explorer has problems with URLs over 2047 characters in length - if you are needing to handle large amounts of text (say from a textarea), POST is the way to go.