There is an abundance of bicycling forums in Singapore, from niche to general, youth to retired, commercial and independent. I don't spend enough time in the hot and sweaty island to make investigating worthwhile. But perhaps others have done so. What I mean is not discussions within forums but reviews from outside, for example (ficticious)...
forum 1: Large readership, friendly
forum 2: sports riders, mostly in 20s and 30s it would appear
forum 3: small but enthusiastic readership, moderated well
forum 4: sarcastic but best threads on MBXs, forum activity comes and goes
forum 5: sponsored by major dealers, organizes rides to reservoir