I have read here in the forums that it is against the TOS to have more than one account. I have never found a TOS to verify this. On FS I had many accounts , one or more for each holiday (since I gave them away as prizes) but they were all active accounts , at least part of the year. I did it for convenience since each was decorated for that holiday and because I needed that many friends lists (there was a 300 cap) for the contests and things. Many others had extra accounts called mules that they primarily used as a means to replay the game and goals over again and earn extra lux (FS version of currants) and would pass the earnings back to their main accounts. Others used their mules to plant hundreds of food trees in. Some, myself included (again for prizes), could earn extra holiday decorations because some of the non repeatable goals awarded those. Others did it for more fauna, some had an entire sphere/account for each species.
The thing is, I can't think of a viable reason to have a mule in Glitch. I myself can change my name for each holiday if I wished, I need not worry about my friends list overflowing (yet?) and since you don't earn objects as goal rewards and can't transfer XP or currants (ok you can if you are creative but ...) what I want to know is what is the point of having more than one account on Glitch ? It seems to me the only way to progress is through time spent and splitting the time between accounts isn't really helpful.