The website was easy to use. It lead me through all the steps without a lot of compilation. I like to read so I still delved into the "help" articles - they were useful by being short and to the point. I had one question for the company that I used their "chat" feature - I received a useful answer quickly. Overall good experience.
Product : I had never used 99 Designs before but needed a logo for a new LLC we are starting up. I had a very good experience with my logo contest. Received 250+ designs on the "basic" level contest - far more than I expected. Although some were pretty average, there was more than enough high quality ones that we had a hard time picking our final winner. File handover was very easy and I received files in every conceivable format (I asked for that because I don't know a lot about formats and wanted to have everything I might need for future).