
There's no problem with people having alts, lots of people use them in an rp way, to post in the style of their character. Huggi and Bo for example. It's when they're used in a deliberate effort to deceive and scam, or break the RoC and avoid the consequences.
There was an example some months ago of someone who posted an auction, then boosted the price up by making offers on his alt.
Not too long ago someone made an alt to spam porn all over UHall, with no comeback on his main posting account.
This the kind of thing we've made the rule to stop.