sh404SEF is the most popular extension for creating and customizing search engine friendly (SEF) URLs in Joomla. sh404SEF natively supports JomSocial (no extra plugins required) to produce intuitive, human-readable URLs and in addition also hardens security on your site by blocking common exploits.
As shown in the attached screenshot, numerous parameters are available to allow you to tightly control how your JomSocial URLs are generated.
I have had a great history with SH404 and found them to be an excellent extension, i have used it for my own websites and many of my customers have bought it and used it. This is perfect for any one using a SH404 extension and highly recommend to anyone.