Parentheses in a URL break the link
When a URL with parentheses () is added to a post, it breaks the link. Like this example:
http://developer.android.com/reference/android/location/LocationManager.html#requestLocationUpdates(java.lang.String, long, float, android.location.LocationListener)
Please note that according to RFC3986, parentheses in URLs are perfectly acceptable. So this seems to be a parser bug in Vanilla Forums.