I am familiar with people who also participate in generosity companies. Some of them do not rush to sell received Tokines, others on the contrary, immediately after the issue of tokens the exchange is sold. My friend advised me to send them to EtherDelta. When receiving tokens, place orders for the sale of x2 - x10 (depending on the project) and just wait until they are purchased.
What do you do with the received tokens?
It depends on the project, if it has a perspective in the future and its token can be claimed, then I would recommend keeping at least a small part of the coins.