Features missing from mobile version?

I’ve recently acquired a tablet and have been trying to navigate Fluther on it (not right this minute; I’m currently on my usual laptop).

It’s been very awkward, but I’ve more or less managed. Too soon to tell if I hate this device a lot or just a little.

Question: Are there features that simply don’t exist in the mobile format? I was unable to find the “flag” link to flag a spam question. Should I have been able to?