I have been visiting Goa for 11 years, sometimes twice a year and whilst I have met a couple of ladies who have had their handbags snatched I haven't met anyone who has been raped (I hope I never do). Yes, these horrible things do happen (not every day thankfully) and things in Goa have changed but as has been said before by many on here "Don't leave your common sense at home" when you arrive in Goa - just be aware and you will be okay, we all need to use caution wherever we go and Goa is no exception.
Like others, I have had many a moan and gripe about Goa not because I am against change but because the changes that have occurred have not been for the betterment of Goa or it's people however, I still go there and I have visited alone, I am just very careful (or try to be) and ensure I go to places where I know somebody.
Anyone visiting for the first time won't notice what long term repeat visitors do, we have become savvy with how things work over there; you won't because you probably won't notice these things and thats how it should be, you will have a great time on holiday and you may or may not return - if you keep returning then it's because you have become passionate about the place and it's people, and you will likely get frustrated down the line as to what is happening - that is all it is, frustration and probably a bit of anger thrown into the mix too.
Go to Goa, have a fantastic time on the beaches, on your trips, by the pool, in the multitude of great restaurants, meeting lots of friendly people - have the time of your life, because believe me you will - don't be swayed by us or some of the more negative newspaper reports coming out of Goa at present - make up your own minds after you have sampled it.
Fizz