Dueling Network Pros and Cons

Pros

1. No Need to Download - Probably the biggest PRO for Dueling Network. If you want to play DN, all you have to do is look up the website, log in, and BAM, you're in Dueling Network. No need for any downloading sites, no need to wait 1-3 hour to complete the download, and most of all, no worry about losing your download for whatever reason.

2. Deck Constructor Simplicity - Their Deck Constructor is very easy to use once you've learned how it works. Their search engine has a lot of variety and it makes it more simple to search for a specific card you're trying to find.

3. HUGE Player Base - DN has a LOT of players to duel on there. So you don't have to duel the same person over and over again. Plus, they also have a Search Finder on there to find anyone you know that's online. 

4. Automatic Updates - DN updates every now and then with new cards from TCG & OCG, DN Features, new Duel Functions, their server, and other stuff, but all they require is for a very short downtime to process all the new stuff for the website.
1. No Official Instruction Guide - One of the biggest CONS of DN. New people come to DN everyday, but they have no clue how to make a deck, host a duel, and how to use the duel functions. They really need a Visual Instruction Guide for new players to see so they get how to use DN properly.

Cons

1. Random Disconnection - Since DN is a website that runs on the Internet, there's a huge risk that the Internet you are using could Malfunction for some reason and disconnect you while you are in a duel or making a deck.

2. The Lack of Logical Players - Unfortunately, DN is NOT automatic, meaning you have to play your cards and effects MANUALLY and DN is VERY EASY to access. This unfortunately leads to players who have no clue how to play the game host and join duels which leads to constant calls to admins and an never-ending conflict of trolling and ragequitting all because the player did not know about a card ruling or a specific gameplay mechanic.  

Websites: http://www.duelingnetwork.com/