After looking at the profile pages for a variety of the wetpaint wikis, it looks like the idea was to allow each wiki to customize the profile it asks its users to fill in.
The wiki owner (an perhaps moderators too?) can change the profile "template" to ask the people who join their wiki different questions. A gamer wiki might ask "what are your favorite first-person shooter games?" But a wiki about motorcycles would not want to ask that of its members, for example.

Likewise if I join a gaming wiki and fill out those types of quetions, I would not want to select all, copy and paste into my "business" profile on a wiki I use for my job.

So, there is a good reason why wetpaint has set things up the way they have. But there may be a compromise to be found. If copy-paste between wiki profiles s does work, I would not see a need for wetpaint to do anything else.

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