Still need so much hype for that, maybe some big moves in their marketing like partnership, big news, etc.

agreed , this project does need more marketing and partnerships to get the ball rolling on a successful ICO.

That's the point. I have the feeling a lot of people think that through datum they get the control back over their data. But they don't. People will only be able to sell the date, which already exist anyways on facebook, google, twitter, or whatever media and device they are using. I like the idea to monetise your data by yourself, but to be honest, I wonder how much people will get in the end because Facebook, google whoever will not stop selling your date then.

But in the end, it will be a nice additional income if datum can bring in some companies searching for specific data.

When will the beta be available  ?

It's true that you can't delete data on the blockchain. All data is immutable as soon as it's written in a block. However I do not think DATUM will store your data in their blockchain. They will probably store it in a DB or IPFS system and write the encryption keys to the blockchain.

yes, and i will try the beta version to.

I think the matter is in value. Companies are reducing their costs for such services. But as for me there will be problems with data security.

in which way there will be a problem with data security?

I think that Datum is doing an excellent social media marketing job, I heard about this project a long time ago. I dont have a clue how they could even improve their marketing