When you installed this plugin, you can:

ps = Product.find :all, :page => {:size => 10, :current => 2}

Then the result of 2nd page will be returned. However, the ps.size won't return the true size of the result set of 2nd page, it will return the 'Total size' of products! You can't get the real size unless you write your own 'size'.

Really bad, use will_paginate instead. (I use this only for compatible reason)