I have a social networking site with user- and company profiles. Some profiles have little to no content. One of the users here at moz suggested noindex-ing these profiles. I am still investigating this issue and have some follow up questions: What is the possible gain of no-indexing uninteresting profiles? Especially interested in this since these profiles do bring in long-tail traffic atm. How "irreversable" is introducing a noindex directive? Would everything "return to normal" if I remove te noindex directive? When determining the treshold for having profiles indexed, how should the following items be weighed Sum of number of words on the page (comprised of one or more of the following: full name, city, 0 to N company names, bio, activity) (unique) Profile picture (Nofollowed) Links to user's profiles on social networks  or user's own site. Embedded Google Map Thanks!