SF Funcheap (http://sf.funcheap.com/) posts the best free and cheap events in the city and is great for finding out about free museum days, street festivals, and top local live music. They handpick the best 6-10 wide-appealu00a0 events each day so you don't have to sort through hundreds of low quality listings. Flavorpill (http://flavorpill.com/sanfrancis...) focuses on cultural events including theater, film and art gallery exhibits.The Squid List (http://squidlist.com/events/inde...), operated by SF blog / hosting service Laughing Squid, features smaller, quirkier events like meet-ups, comedy shows, and one-off community events.Pollstar (http://www.pollstar.com/resultsC...) provides a reasonably comprehensive list of major concerts by regional and national touring artists, but misses some great smaller acts and shows at non-traditional venues.u00a0 u00a0u00a0u00a0 Concerts By Josh (http://bit.ly/ConcertsByJosh) I post my own Google Spreadsheet list of what I consider to be the best major SF concerts (with a focus on rock, dance, and hip-hop) culled from Pollstar, some other concert aggregators, and websites of the venues.u00a0 I do it as a service to myself and friends, but a lot of people have found it useful so I thought I'd share.SF Station (http://www.sfstation.com/), where people can post their own events, skews more towards nightlife, featuring art gallery opening parties, club nights, and a few big-name concerts.u00a0 Unfortunately, you get a lot of noise from people posting on-going exhibitions and services provided as events that repeat everyday.u00a0