Answerbank is subject to nuisance ads but I am yet to reach the stage whereby I believe the site to be unsafe.
Perhaps you are using Norton with Internet Explorer. If that is the case I say get a better Browser because AB does have a compatibility issue with IE: as do many other Internet sites.
I consider Firefox to be the best of Browsers :-
https://www.mozilla.org/en-US/firefox/new/
Incidentally, you can have as many Browsers as you wish and if one is 'playing-up' it's an easy matter to switch to another one.
Hans.