Professionals such as Ted Bauer have posted about it, and aspiring professionals like me have posted about it. Of course, "it" is "how LinkedIn is becoming another Facebook or Twitter". As I've stated, I didn't come onto LinkedIn to use another Facebook or Twitter—I came onto LinkedIn to look for a job and volunteer opportunities, and be discovered as an aspiring author, etc..
Others have also come onto LinkedIn to look for and be found for jobs, volunteer opportunities, and desired careers. I am sure that my fellow job, volunteer-opportunity, and career seekers feel frustrated with LinkedIn becoming something like "LinkUp".
Thus, LinkedIn either needs to return to its original purpose or restart with another professional-network platform and leave LinkedIn/"LinkUp" to those whom (with all due respect) want to turn LinkedIn/"LinkUp" into a break-from-work or party-at-the-office website. My own suggestion is that LinkedIn could build and brand their new digital platform as "WorkBook" (Notice: "WorkBook"), and have the professionals and aspiring professionals migrate from LinkedIn/"LinkUp" to WorkBook.
On WorkBook, LinkedIn would forbid any content that is not related to one's work and/or that is not related to professional life to be shared. Meanwhile, I should note that even though I've been imperfect in my use of LinkedIn, my own imperfections don't justify or excuse the imperfections of others—and (the obvious converse is that) the imperfections of others don't justify or excuse my imperfections—and I hope that I'll be the first to admit when I'm imperfect in my utilization of LinkedIn.
Update (Not in the original post, although shared on LinkedIn; via GoComics.com):
Update (Not in the original post, although shared on LinkedIn; via GoComics.com):
On LinkedIn, I shared this with "An example of why waiters may lose their jobs (and really, why any employee might): i.e., badmouthing the employer's product to a customer of the employer". This is the kind of item that one can share on LinkedIn if he or she can explain why it relates to one's professional life.