Was going to downld Xenotix ADD-ON but found this please check into this site by same author: www.exploit-db.com/wp-content/themes/exploit/docs/24541.pdf
I wanted to download your new Xenotix add on, but not enough reviews because it is still new...did a quick google search to see if any comments were out there, came across a site by the author who made your add on.....you really should read his expose....may want to investigate quick, if his bragging is any indication of what he is really up to...
Re: Was going to downld Xenotix ADD-ON but found this please check into this site by same author: www.exploit-db.com/wp-content/themes/exploit/docs/24541.pdf
As you know, most add-ons are created by independent developers and not by Mozilla. They are not guaranteed to be useful or safe, although they do get some level of review.
If you are referring to the keylogger, consider that you are installing a kind of spyware into your browser. If you lack confidence in what might happen to the information, do not install it!
In his paper, he describes some proof-of-concept extensions showing how malware can exploit Firefox. This may well be one of those. To bring this to the attention of the reviewers at the Add-ons site, you might post over there on their forums.