Re your block of User:Witysmartone 

Hi, just wondering why you only blocked for 24 hours?  If you look at the contribs that user has failed to make a single constructive edit so far - normally that warrants an indefinite block?    
Nothing too mysterious. ) The user was only active for about 40 minutes, in all. In my experience with basic vandal accounts, the duration of the block only rarely makes any difference in practice. Most times, they never return even after a short block. In the event they do return, they'll either continue disrupting the project (in which case it's easy enough to re-block) or will contribute helpfully (in which case we're better off than when we started); in the former case, the indefinitely blocked vandal will be quite able to return using another account, anyway, so the term "indefinite" can be a bit misleading. If there is a danger in this strategy, it's in allowing a number of iffy accounts to sit around autoconfirmed, but we tend to do that already, with a few thousand every day. –   
OK thank you for the rationale!