With a few modifications, it can be an amazing router for the price.
30 March 2014
Summary: I got this router for a steal at $20.00 but, it does have it share of issues. The WiFi would be visible, but wireless devices were unable to connect until the router was restarted. This happened about 4 times a day. I was able to fix this by installing firmware 1.2 beta form D-Link's website. This router doesn't support DD-WRT. Another issue was that the router had a pretty short range. My garage was a dead zone.
Spend the extra money and get quality equipment. Stay away from this.
18 April 2013
Summary: When it works as claimed it is great but it can lose wi-fi for no reason. I reset it and it does fine for a while then it loses it again. Could be a Q/C issue. But for 20 bucks it was worth a shot. You get what you pay for. For my money go get a Cisco system or something other than D-Link. It works great hard wired but I don't need hard wired. I bought it for wi-fi and there it falls short...