Regularly half or more of the questions on the ServerFault front-page seem to be there only because they were bumped by the Community bot.
It's self claimed configuration is among others:
Randomly poke old unanswered questions every hour so they get some attention
IMHO it currently achieves more or less the opposite though.
It draws away attention from new questions.
Those new questions need answering much more than old ones (from users that are not contributing anymore, if they ever did at all, and/or problems/topics/technology that have expired).
Can that bump frequency be reduced?
For some time now there appears precedence and support for that in the back-end according to meta.stackexchange.com:
Stop the front page from looking like this:
It's been asked before but maybe then the back-end functionality wasn't there yet.