I didn't think there was discussion on using cloud based software. H&R Block and Tax Act are alternative programs to TT, they are run and store data on your local PC.
I do find it interesting how much people are worried about cloud options. I'd guess that most people already share a ton of their personal information "in the cloud" with their e-mail, calendar and contacts. Toss in social media (Facebook, Twitter) along with data breaches of personal information (including credit card, social security, names, addresses) and a person's life story is readily available for hacking. I get the concern, but at the same time we've already succumbed to much of our "lives" floating in the technology clouds.