The most interesting conversations in a conference can kick off in the bars at night. When the Web 2.0 Expo starts Monday, there are plenty of events every night, so you might have a hard time deciding where to go. However, a Finnish web service called XIHA Life might be able to help you out.

XIHA was founded in September 2007 and is based in Helsinki. It targets people who are on the go in different cities and use multiple languages in their everyday lives. It has developed a language filtering technology that allows users to select several languages to communicate and receive information. It calls it the world’s first multilingual social media platform. The users automatically see only the content they understand.

Being Swedish, I don’t understand Finnish, but through XIHA I found an unofficial summary in English of the parties and gatherings expected to draw the coolest crowds of web folks in San Francisco next week. XIHA means “fun” or “happy” in Mandarin, and Hip-Hop in Cantonese, by the way, to set us in the right party mood.

Saturday April 19:

What: Web Mission Party
Where: Redwood Room at Clift Hotel (495 Geary St)
When: 8:30PM –

Info: 20 start-ups from the UK kick off their official tour to Silicon Valley (our coverage).

Monday April 21:

What: Pre-Web 2.0 meet-up with Flickr, Moo
Where: Kate O’Brien’s (579 Howard St)
When: 5:00PM – 8:00PM
Info: The online photo management service Flickr and the Flickr photo printing company Moo invite you a pre-game taligate.

What: The Finns Are Coming to Web 2.0 Expo!
Where: Foreign Cinema (2534 Mission St)
When: 6:00PM – 8:00PM

Info: Founders and representatives from some 15 Finnish startups invite entrepreneurs, investors, reporters, bloggers, and analysts. Drinks and appetizers will be served.

What: Social Media Club – San Francisco
Where: Adobe (601 Townsend at 7th St)
When: 6:30PM – 8:30PM
Info: A book discussion about social media featuring the authors of Now is Gone, Geoff Livingston and Brian Solis.

Tuesday April 22:

What: British beer tasting & European networking
Where: Hiller Aviation Museum (San Carlos Airport)
When: 5:30PM – 8:00PM
Info: Network gathering focusing on how you expand into Europe as a US company. Registration is required. SMC Members (Student or above) are $5, non SMC Members are $10.

What: Ignite Web 2.0 Expo SF II
Where: DNA Lounge (375 11th St)
When: 7:00PM-
Info: This is patterned after Ignite Seattle. There will be 16 talks, each 5 minutes long, about different web service related topics – such as how to get the most out of your social online community or how to make money in mobile. Anyone who is attending Expo or Web2Open is welcome to speak or attend.

Wednesday April 23

What: Evolve – Chi.mp and Mashable’s Web 2.0 After Party
Where: Mighty (119 Utah St)
When: 7:00PM – 10:00PM
Info: Tickets are on sale at $10/ticket, however, as a limited introduction offer, the first 150 users to use the code “mashme” will pay nothing!

What: The Big Open Y! Party
Where: Yahoo! Brickhouse (500 3rd St)
When: 7:00PM – 10:00PM
Info: All conference goers with full passes are invited to participate. Admission is dependent on available space.

What: South Park Crawl
Where: South Park (Brannan / Bryant / 3rd / 2nd St)
When: Wednesday, April 23, 7:00PM – 10:00PM
Info: Local Web 2.0 companies will open their doors to conference attendees. Attendees will arrive with a map of the participating venues and a mission to eat, drink and network. It is open to conference attendees only.

Thursday April 24

What: Booth Crawl
Where: Moscone West
When: 4:30PM – 6:00PM
Info: It is open to conference attendees.

What: After Hours Event
Where: Marriott (55 4th St)
When: 6:00PM – 12:00AM
Info: Marriott Hotel, just down the street from Moscone West, is hosting the biggest crowd of Web 2.0 Expo next week.

Cecilia Aronsson, a Swedish business reporter, is a fellow at the Innovation Journalism Program at Stanford University. Through July, she’ll write for VentureBeat.com about her experiences in Silicon Valley.