Useful and useless FireFox add ons

[Metallica1983]

Ok so i was just snooping around the add on page at the mozilla site and i noticed that there are some very useful add ons and some very useless add ons heres an example gmail notifier and web mail notifier two very useful programs they obviously notify you when you have mail gmail notifier is strictly gmail but web mail notifier lets u choose from several email providers including gmail pretty cool pretty useful now here are some pretty useless add ons bookmark manager wtf do we need bookmark manager firefox already has one so why do we need another one pretty useless huh folks. heres another example of useless add ons searchbar and toolbar add ons powered by google and or yahoo keyword powered by google and or yahoo now why waste space on ur firefox and slow it down by adding a search bar powered by another search engine when fire fox already has a built in search bar whos default search engine is google and u can change it to yahoo or ask so search bar add ons seem completely useless to me. if you have anything to say to me please post in this thread or if you would like to talk about add ons that you believe are either useful or useless