I couldn't really watch it, unfortunately, but the general feeling I saw on Twitter was that this was a vast improvement from last year's WWDC.
Gizomodo has a nice round up of the features announced. HomeKit sounds VERY interesting... it'll be fun to watch vendors try/not try to take advantage of that. And integrating Shazaam directly into Siri is pretty cool - but are people really hearing music that they don't recognize when they are out?
I've no experience with either of the programs you mention there, but I'm sure someone will chime in about them specifically. As for spyware, some free products are OK. I've had good luck with Adaware and "Spybot: Search & Destroy".