1.   Getting users to register, however, can be a problem.

2.   In addition, it included a unique serial number, called a GUID, attached to each copy of Real Jukebox when a user registers the software.

3.   Internet users can register at circuitcity.com.

4.   Networth, which also requires users to register, found no trace of North Carolina Railroad but easily found symbols for many other North American stocks.

5.   The amount of data, level of detail, and timeliness available for free varies, however, and most require users to register before accessing information.

6.   The new Wal-Mart travel-booking engine does not require users to register first.

7.   The site is scant on details about the hotels it offers, however, and it requires new users to register before they can look for a room.

8.   The Web site of The New York Times requires users to register but does not charge.

9.   Three-hundred and fifty-thousand users already have registered for the game.

10.   To keep businesses from voting for themselves and skewing the results, the company requires users to register before voting and allows only one vote per business.