Puppy play-date?

I have a 3 month old black lab and I need socialize her more.  We are having a problem with her peeing (due to being scared) when anyone/thing except me, my cat, and my boyfriend talk to her.  She is a super sweet puppy and plays with my mom's dog sometimes.  She gets scared at first, but warms up quickly to others.  I just want to introduce her to other people/dogs in the hope that it helps her overcome her weak bladder.

I realize this is a fairly old post but did you try out the Missoula Dog Park?  I have a submissive urinator myself (dachsund/terrier cross) and I'm close to getting rid of her because of that reason.

I find myself shampooing or calling carpet cleaners way too often.