Addictive Typing Lessons is a Firefox add-on which turns Firefox into a typing tutor. After you install it, and restart Firefox, there will be an icon that looks like a keyboard in the lower right corner of the toolbar. Click on it to start the session.
I haven’t shilled for the Book Burro Firefox extension recently. Once you install Book Burro, it pops up a little window in the upper left hand side of your window when it detects that you are looking at a book on the web. (I notice it most often when I am looking at Amazon Books. After you tell Book Burro your zip code in the preferences, it will use World Cat to find the closest copy of that book in a public library. If the closest library happens to be your library, you can click on the link and it will allow you to place a hold on the book. (Of course, this assumes that your library is using SIRSI, or some other system World Cat understands.) For bibliophiles who are trying not to spend all their money on books, this is very useful.
Have you ever been in a pop-up window (like Haloscan comments use) and wished you could see the menubar and toolbar? If you use Firefox, and install the Unhide Menubar Add-on you can get the menu bar and toolbar to reappear for that window.
I think we have books in every room of the house except for the bathrooms and kitchen. We would probably have books there if space was not at a premium. So I have been trying to minimize book purchases, not just because of cost, but because there is no space left for new book shelves, and our current shelves are full.
I have been trying to use the library in lieu of buying books. We have a wonderful library system, the Pikes Peak Library District, which allows us to reserve books on-line. I recently discovered that the Firefox add-on Book Burro can search the Pikes Peak Library District catalog system, when it sees me looking up a book on Amazon.com. It makes it relatively trivial to reserve the book, without having to re-enter the search parameters in Sirsi, the application which maintains the catalog. The add-on will also provide prices for a book from various on-line providers, but I am trying to avoid them, since we don’t need more books.