I've been using Firefox for some time now. but i've been having all kind of issues with it and am considering a move to Google Chrome. i don't want to do this, but for example: your site tells me i'm running version 3.6.10, when i am running 4.0.1...huh?

Question

i play restaurant city on Facebook, among other things, but the game crashed every time i breathed on it. somebody suggested Chrome, so i switched to it...just for that game.
today, i started having trouble with Twitter (the new one), sending messages & tweets. i've switched to the old one & it works, but again suggested that i go to Chrome for this & all my needs.
i don't want to, but i will if things like this keep happening.

Answer 1

You can use the Tab key to select a search engine on the bottom bar and press Enter to use the search engine to do the search.
*https://support.mozilla.org/kb/Search+bar
In the current Firefox 34 release there is a new "one-off" search bar.
This search bar doesn't show the name of the search engine and a logo.
You can type one letter to make a drop-down list appear where you can see suggestions and see the used search engine and that also has bar at the bottom where you can select other search engines that are enabled via the Search tab in Options/Preferences.
You can use the Tab key to select one of the other available search engines and press the Enter key to search with the selected search engine.
Click the search engine icon and click "Change Search Settings" to open the Search tab in Options/Preferences (positioned between Tabs and Content) to select the default search engine and select which search engines to show in the search bar drop-down list that opens when you start typing search terms.