It would appear that Lefora is being "upgraded", only the upgrade appears to be running it from the yuku code-base instead. Compare the Features.
While the home-pages follow the yuku structure, they are somewhat better than yuku's own. Some nice ideas and content. Some poor images.
I think it is good that they have retained their own domain rather than a subdomain of a subdomain of yuku.
There does not appear to be a "support" forum, help being provided by a Freshdesk ticket system, so there is no easy way to gauge the Members' reaction to this change.
Of course, this also helps the great advertising machine as a whole.