Everyone was useful and applicable. My third time participating in this...
Disclamer: The Conference producer, Oborot.ru, is not, in any way, affiliated with companies mentioned on this page. Advices listed below are a compilation of independent opinions, mostly collected from the Internet
Getting a visa
To enter Russia, most citizens of European counries and the USA need a visa. You can get a visa directly, through one of the consulates (official list) or use one of the numerous "support" services (just try to google for "russian visa" - even if you apply for a visa directly, we advise to look through their FAQs as there is lots of useful information there)
Generally, it's much easier to get a tourist visa than a business one. Most hotels provide invitations for a tourist visa for a moderate fee (around EUR 50). "Support" companies also provide invitations.
Please make sure that your passport expiration date is at least 6 months after your planned departure from Russia. There also must be two clean pages in your passport available for the visa (no marks or stamps on these 2 pages).
You can try Kayak to find siutable tickets to Moscow.
E-commerce Russia & CIS - 2011 starts on Oct. 13 and ends on Oct. 14. So, your arrival date should be at least 10/12/2011, and departure (if no other business / tourism in Moscow) - 10/13/2011 (late night) or 10/14/2011.
Getting from the airport
You can get order a transfer directly from your hotel (recommended option);
It's possible to book a transfer in advance - you can find quite some options on Google. The average rate is around EUR 50.
Please, beware taxi drivers at the airport, they can overcharge you 2 times or even more!
Budget option. You can use the Aeroexpress fast-train (EUR 8 and 40 minutes to get to the center of Moscow) and then - take the metro. It's safe and fast (although, crowdy in rush-hours). You can find a map of metro with English transcription here and an interactive map in Russian - on this page. A trip between any stations costs RUR 28 (EUR 0.7), a 5-trip ticket - RUR 135 (EUR 3.4).
Note that Russian currency is Rouble. Foreign currencies are generally not accepted, so you might consider exchanging some in the airport. You can also exchange Euros / Dollars into Roubles in any bank or exchange offices - there are plenty of them throughout Moscow. Official rates (actual exchange rates may vary):
We've selected a few hotel options that are within easy transport accessibility from the venue place. Please, check current prices on the hotel websites or on Booking.com! BUDGET Bagration Hotel
Basic, clean, although a bit weary rooms. The hotel is located in a 10-minute walking distance from the venue place ("Info-space" Conference center). Prices start at RUR 700 (EUR 18) for a "dorm-like" place in a room and - RUR 3500 (EUR 88) for a good single rooms. Prices are per night and subject to change without notice!
STANDARD / BUSINESS Holiday Inn Sokolniki Hotel
Good hotel with comfotable rooms, hotel located right next to the Sokolniki metro station. Around 25 minutes from the venue place (15-minute trip by metro, direct line + 10-minute walk). Prices start at RUR 6750 (EUR 168) per single or twin room. Borodino Hotel
Similar to the one above - just a bit cheaper and a bit further walk from the same, Sokolniki metro station. Around 30 minutes from the venue place (same route), rooms start at RUR 6000 (EUR 150) per single room.