Thanks, Shadok, now i think i've got it. As for me - i used to be a very active buyer and player for good games (mostly AAA FPS series, like FarCry, L4D, Unreal Tournament and so on) initially, but since some time i stopped playing those, and left my Steam account almost only for farming the Trading Cards, via buying games that i have some interest in, if their price (with a discount) covers, or is close to all their card drops price, or getting indie games for free from the websites mentioned above, and just idling those games using IM, so, the games i idle are not some "useless buches of assets", yet i would never buy most of them if they'd cost me something, and will probably never actually play many of them (speaking about that, idling them with IM only adds to their "played time", but earns no achievements, even the simpliest ones, like "complete level 1" or "kill your first enemy", so i guess in long term and because of the mass giveaways on the aforementioned websites such behaviour can lead to "rating drop" for those games).

As for the "how IM will handle those games" - i'm not totally usre, but as i said in my initial post, i think IM has already cut some games from the list of "yet unidled" ones, and i'm getting more sure about that, ince today i think i've noticed another drop in the "unidled" games number in my IM. Again, i might be wrong, simply because i don't screenshot IM or write down/memorize the exact number of unidled games before quitting the program (and atm i have 0 unidled games left) but i have strong feeling that the number is really getting decreased between sessions, for a noticeable amount, bigger than it would normally, during the idling. Next time i'll get a big bunch of games i, or someone else should check this percisely.

P.S. Sorry if my English feels awkward - it's a foreign language for me and i haven't practiced it much in a while...

So, today on teh Steam News i saw this: http://psteamcommunity.yuanyoumao.com/ogg/593110/announcements/detail/1954971077935370845
and i'm not getting the point: will all the availavle cards be given to me automatically, right away, when the game reaches a good status, and i only need to run all the newly bought games at least once, for a few seconds, and IdleMaster is not required for getting teh cards from now on, or will i still need it, to idle the games for X hours, like i used to, but i will get the cards later, and not while idling? And will i need to dile the games as usual, if i'll get them after the game reach the required status? Please, explain, how it will work from now on, i'm not quite getting it.
Also: i'm not quite sure, gut i've got a bunch of games a couple of days ago, and yesterday i still had like 10 games and 27 cards left to idle, while today IM shows i only have 5 games and 16 cards left to idle. Does that mean that i got it right, and some games have lost the card drops, due to the low trust rating or smeting?

Btw. Idling still works - one card dropped just now, while i was typing this message.