Top of the net Best Asian-American Network AsianAvenue.com In the three years since it began, AsianAvenue has really come of age. You're likely to find thousands of members-mostly young and West Coast in attitude-online at any given time, chatting live, checking free e-mail accounts, sending instant pages, and finding the scoop on everyone from Margaret Cho to the Mountain Brothers. There's also an enticing slate of features on entertainment, food, and travel. One piece of constructive advice we're offering, free of charge, to the site's webmaster: Clean up the JavaScript so the world can better appreciate The Fu Brothers, an online performance series by the three-man troupe Slant.