I read their privacy page just now and was impressed. It is long, only slightly redundant and covers many technical but relevant details. The information was unusually clearly presented. There were no surprises.

A recent addition spells out the danger that would arise if they sold their assets, which would include the personal data base. They describe what I would expect. It is perhaps impossible for them to promise that the data would not be transferred as that might contravene share holder trust or even fiduciary responsibility. In any case I have not heard of any company making such a promise. It is rare, I suspect, to even mention it in a privacy page.

I think I will respond to a few of the invitations on the promise that I can back out later.