These days I find it very rare to actually talk to someone on the phone. It seems about 90% incoming calls for me end up being some sort of solicitation, government survey, rebate, tax credit, scam, etc. etc.
I've registered on https://www.donotcall.gov/, and I have been religiously adding numbers I don't recognized to a blocked callers contact on my phone. I just decline any number that isn't in my contacts and figure they will leave a voicemail if it is important. If they do leave a voicemail, will read the transcription and not bother listening to it, unless it is someone I know trying to reach me.
It seems like the current trend is for government / nonprofits (which are not legally obligated to respect do not call) to use rotating banks of numbers (which bypass blocked numbers) to call. They also often seem to be able to pick numbers from your local area as well, to make you more likely to pick up.
Does anyone have any other strategies for dodging these kinds of calls?