Forgoing the recently purchased StubHub, there are very few ways to find good Web deals on event tickets without doing some legwork or dealing with cluttered interfaces. Oyaka, which launched last year, draws from several ticket vendors to help you find the best deal on seats. In the same way that Kayak pulls plane tickets, Oyaka grabs all the data, then gives you various tools to sort through it without inundating you with text. You can narrow the results by price, seat location, and number of tickets to quickly find what you're looking for.
Oyaka has a few weaknesses. It doesn't pull events outside of the United States (despite having a U.K. and Chinese version of the site), so if you're trying to see whether your favorite band is on a world tour, you'll have to find that information somewhere else. Also, some of the results were out of date, which led to dead ends. More importantly, I found it to be missing some pretty large acts simply due to the fact that they sell their tickets through smaller, third-party services that Oyaka doesn't index.
Oyaka is still a handy tool for finding popular ticket results from a large group of ticket providers. If you're trying to get tickets for a popular event, you're likely to find them with this service. For smaller shows, you're better off visiting the artist's site.