It is always interesting to see how "creative" is searched in the forum area (from my errorlog).

My clear favorites ... who know at least what they are looking

And a few exotics that are not quite sure what they should look for ...

;-)

Hackers looks for various known targets, meaning admin panel or registration scripts, which may be vulnerable in some version.
Other strings look like they would try out the operatinal system itself for some holes, or other software.
There could be hundreds of such examples. I also have them all for the root site, plus many others:)
Not sure what did yoy mean by the "tarpit add-on".

No really serious note for a Addon ;-) Only a funny hint that such request should be sent in a Tarpit. And i do realize that you have to just live with this spam!

All a good Sunday