I am working on building application on SFDC which will have http callouts to external REST API. 

https://help.salesforce.com/apex/HTViewHelpDoc?id=integrate_api_rate_limiting.htm&language=en According to this link, 

"Any action that sends a call to the API counts toward usage limits, except the following:

Outbound messages

Apex callouts"

My question is, do external HTTP callouts count towards this API limit? If not, is there a limit on number of external HTTP API calls I can make?

Apologies if this has been answered before. 

Thanks,

Swaroop