Re: What would you want in an AP browser toolbar?
I never use such toolbars myself, bookmarks are much better.
However, I do have something similar to that, a custom menu I tack on to a-p pages. In it I have direct links to the various browsing (anime>recent, years, alpha, studios. manga>recent, alpha, years. tags (no point having seperate for anime & manga, since they all lead to the same page anyway)), a link to my profile page, and links to my anime lists (watched, watching, etc).
regarding chat: Browsers which allow such custom toolbars often have their own chat prog built in, so you could also include a link directly to the irc chan. (Such a link will also work if they have a seperate irc prog installed, such as mirc.)
*Warning: The above post may be highly opinionated, read it at your own risk.
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