I get a lot of DIRECT e-mails on this one as well as responding to the ones on the Forum. If you use your Brower's FIND feature, and search for the word 'drain', you'll find some hits on the subject.
Here's a link to a recent post with links to OTHER info. French Drains. As to your specific questions, water may sit in your drain but if installed properly, this shouldn't be a problem. It depends. As to where it goes, it may go to the street, or another part of the property where it is 'harmless'. Just don't dump it into the sewer or septic system or onto someone else's lot, directly or indirectly.
If you have more ?'s, e-mail me DIRECTLY. My best to ya and hope this helps.