65 million file downloads over entire period (3+ years) their service has been available sounds impressive, but doesn’t clarify how many of those downloads are reaching unique users, being installed on handsets and run, let alone being served any ads. Gamejump is just spewing out files, they’re not paying any heed to the user experience beyond that, and in the context of mobile this is a serious shortcoming.

Users are drastically less likely to see through a transaction where they aren’t invested – and the kind of games they want to play on quality grounds cost money.

The 10.1% figure (incidentally down on the >15% that Greystripe reported in 2006) will be based on a much smaller total and skewed to some extent by people responding out of curiousity rather than interest in the ad content (although I concede this makes no odds to the advertiser in the short term, at least).

There may be a place for this model, but it’s likely going to remain a graveyard for mobile games at the end of their commercial life, as borne out by the GameJump catalogue. Unlike web-based casual games, the returns are too meagre and the upfront cost of development too great to make advertising a sustainable model on it’s own.

I’ve talked more about this model here: http://citystate.co.uk/archives/ad-funded-mobile-games-a-bad-idea/

Recommend to have a look at this :

http://fromthemarket.blogspot.com/2008/06/mobile-advertising-real-experience.html