Google Translate API. How many people can use my translation functionality daily?

When I implement google translation to my multilangual site, something like in this example. I expect that it will be used by thousands of people daily. Will google block it in this case? And if so, is there some alter开发者_如何学JAVAnative to google translate (with no limitations)?

Google Translate API Terms of Use. Doesn't look like they would block you unless you breach certain conditions (no more than 5000 chars in length etc)

It seems that there is also a daily limit of 100,000 characters per IP.

Source: http://googlecode.blogspot.com/2010/11/introducing-google-apis-console-and-our.html?showComment=1288658965222#c1443822788531912961

and

http://www.devcomments.com/Language-translation-Daily-Limit-at1040559.htm

Couldn't find any official statement, though.