user19855: I noticed myself and in the comments of higher-rep users that we seem to have a certain user (who keeps registering new usernames, i.e. "sockpuppets") and keeps asking questions about genes and beauty/attractiveness, usually with pictures of ugly and attractive people attached, as if illustration is really needed.
Is there some guideline for dealing with such? I guess "ignore" would be the received rule...

user43480: Downvote liberally, close if appropriate, and flag if appropriate (as you would for any other post).
The most recent post, per the comments, had a link that led to a stuffed browser history. I originally flagged for moderator attention, but then realized that I could just edit out the offending link. I think the user could use some moderator attention, because, though the post is no longer concerning, I think the behavior is. Best case, it represents either an effort to prank other users, or, if accidental, a lack of care.
As to whether this is a sockpuppet issue, I'm not sure it is. There is a specific internet subculture that becomes quite fixated on these sorts of things, so it's plausible that these questions could be coming from different users.

user9943: Always flag suspicious sock puppets so that the mod team can look into it. Mods have tools to cross-check users and identify such users. In fact, using multiple sign-ins, although not recommended, is not a problem. Problem arises when users ask the same questions or otherwise perform repeated misbehavior with them.  

19855: <p>I noticed myself and in the comments of higher-rep users that we seem to have a certain user (who keeps registering new usernames, i.e. "sockpuppets") and keeps asking questions about genes and beauty/attractiveness, usually with pictures of ugly and attractive people attached, as if illustration is really needed.</p>

<p>Is there some guideline for dealing with such? I guess "ignore" would be the received rule...</p>
 43480: <p>Downvote liberally, close if appropriate, and flag if appropriate (as you would for any other post).</p>

<p>The most <a href="https://biology.stackexchange.com/questions/82261/is-there-a-such-thing-as-beauty-genes-or-is-attractiveness-a-combination-of-ge">recent post</a>, per the comments, had a link that led to a stuffed browser history. I originally flagged for moderator attention, but then realized that I could just edit out the offending link. I think the user could use some moderator attention, because, though the post is no longer concerning, I think the behavior is. Best case, it represents either an effort to prank other users, or, if accidental, a lack of care.</p>

<p>As to whether this is a sockpuppet issue, I'm not sure it is. There is a specific internet subculture that becomes quite fixated on these sorts of things, so it's plausible that these questions could be coming from different users.</p>
 9943: <p>Always <strong>flag suspicious sock puppets</strong> so that the mod team can look into it. Mods have tools to cross-check users and identify such users. In fact, using multiple sign-ins, although not recommended, is not a problem. Problem arises when users ask the same questions or otherwise perform repeated misbehavior with them.  </p>
