The problem you're encountering is because the data are currently transmit to the Web2Live server using HTTP GET, and the function called to encode the sent data properly can break sometimes. As I guess, the transmission method will be using HTTP POST starting with the next version (@markee, slap me if I'm wrong), which increases the maximum length of the sendable data from 2048 chars (including server request URI) to unlimited. If you'd like to get more info about this issue, just feel free to ask here and I'm sure you'll get detailed answers.
Regards,
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