Domain name

I have been scratching my head, brainstorming for hours for a suitable domain name for my research project.... it must reflect few key themes: In-game advertisement, Mobile games, gamers' behaviour, connections, network, start-ups etc. I came out with over 100 choices, of which half are already 'registered' names... and the other half are not to my satisfaction. Wow, this is an onerous task.... and the search continues! Inspiration please!!