No. Maybe for visa stuff it's OK (though I would be skeptical), but I would never use it for finding accommodations/restaurants and stuff. It is very obviously edited by businesses in the area advertising their own places. It hasn't reached the threshold like wikipedia has where there are enough people monitoring it to filter out that crap. Hostelworld.com is your friend for accommodations.
For visa stuff though I would use the US state department. Don't know for European passport. But look at the state department for Taiwan. It says this:
ENTRY/EXIT REQUIREMENTS: As a U.S. passport holder, you will be allowed to enter Taiwan without a visa for up to ninety days (no extensions permitted) as long as you have a passport valid for at least six months beyond the date of entry into Taiwan and have a confirmed return or onward air ticket. You must have already met any additional visa requirements for the next destination, if applicable. If your passport is valid for less than six months from the date of entry into Taiwan, you may apply for a landing visa that has a duration of stay of no more than thirty days. The cost of a landing visa, including processing fee, is NT $5140 (currently equivalent to approximately US $165.00). Extensions are not allowed. You also have the option of applying for and receiving a Taiwan visa prior to arrival in Taiwan. The cost including processing fee is US $164.00.
http://travel.state.gov/travel/cis_pa_tw/cis/cis_1036.html
Why the hell am I doing this in the Warlight message board?