It isn't the question of popular, as much as it is a questions of marketing. New gTLDs are not having a too easy of a time getting high rankings from search engines, but on the other hand it provides for a more interesting branding, which contributes to your marketing campaign. MYNAME.hosting certainly sounds cooler than MYNAMEhosting.com or .net, in spite of latter probably getting higher marks in search engines.
Do you see a lot of companies using or switching to .hosting? That probably serves as the answer to your question.
I haven't seen it pick up much myself. I tried on previous website for a client using .gift as the extension for a gifting website however people seemed to not understand the concept unless www. Was put before it.
I think the pure volume of extensions is too much, even an original tld such as .info isn't very popular these days.