Some people were indeed taking advantage of multiple accounts.
One change already implemented is to have all gifts under 10K , because some were sending a Jade to their second verified FB account and taking advantage of the 10x multiplier.
That was also limiting the invites a fair person can send , because with a Jade most of the budget was gone.
And it is better to be able to get several persons invited rather than 2-3.
Second step is to review accounts with similar email but for a digit at the end or coming from the same IPs and disable the distribution.
That is a tad invasive but otherwise the fair minded people that don't resort to this would be affected.
Work has started on the integration with the Coinomi mobile wallet.
https://coinomi.com/All conversations and issues raised on this forum are being reviewed daily.
If possible,you can limit the number of private keys that can be imported to wallet.People are importing multiple keys to the same wallet.